South African Journal of Child Health最新文献

{"title":"Perceptions of healthy food, and perceived facilitators and barriers to buying and consuming healthy food, among female caregivers in Soweto, South Africa","authors":"D. Besselink, H. Brandt, S. Klingberg, C. Draper","doi":"10.7196/sajch.2022.v16i3.1883","DOIUrl":"https://doi.org/10.7196/sajch.2022.v16i3.1883","url":null,"abstract":"\u0000 \u0000 \u0000 \u0000Background. Obesity poses a continuous health challenge in South Africa and disproportionately affects black African households. To target obesity in these settings, it is crucial to have an in-depth understanding of food choices made by affected households. Objectives. To explore how healthy food is perceived by women living in Soweto, and the facilitators of and barriers to buying and consuming this food. \u0000Methods. This was a qualitative study that utilised semi-structured interviews. Ten participants were recruited using purposive sampling. Interviews were audio-recorded, transcribed verbatim and analysed using thematic analysis. The study took place in Soweto, South Africa, and was conducted from February to May 2019.Results. Six themes were developed from the data: perceptions of healthy food; protecting family members from unhealthy food; learning about healthy food; appreciation by the family; home-cooked food v. food bought on the street; and budgetary restrictions. The first three themes were grouped by the overarching theme ‘consciousness of healthfulness of food’, and the last three themes were grouped by the theme ‘influences of the family and environment on food choices’. \u0000Conclusions. A focus on the whole family’s dietary behaviours is recommended and, in future interventions, guidance communicated in intervention materials should be tailored to existing knowledge of healthy eating. \u0000 \u0000 \u0000 \u0000","PeriodicalId":44732,"journal":{"name":"South African Journal of Child Health","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49240964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neonatal tetanus: An old enemy still lurking around in 2021","authors":"L. Naicker, E. Verster, L. Nariansamy, G. Sourour","doi":"10.7196/sajch.2022.v16i3.1887","DOIUrl":"https://doi.org/10.7196/sajch.2022.v16i3.1887","url":null,"abstract":"Neonatal tetanus (NT) is a severe but preventable disease for which South Africa achieved elimination status in 2000. It is under-reported, especially in poorly resourced areas where there is minimal surveillance and immunisation coverage is overestimated, and where traditional practices are employed. The case fatality rate is high and surviving infants often have significant morbidity. The aim of our case report is to alert clinicians to the presence of NT and its clinical presentation and to emphasise the value of notification and surveillance. Prevention of NT should be prioritised through: education around hygienic practices at delivery; ensuring adequate immunity against tetanus in all women through routine childhood immunisation; and administration of tetanus toxoid in each pregnancy. NT should be considered in any neonate who could suck and cry in the first 2 days of life and who, between 3 and 28 days of life, cannot suck normally and becomes stiff or has spasms.","PeriodicalId":44732,"journal":{"name":"South African Journal of Child Health","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43144168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surgical treatment of bronchiectasis in children: An 11-year experience at a central health facility in KwaZulu-Natal, South Africa","authors":"M. Hbish, Jing Chen, P. Jeena","doi":"10.7196/sajch.2022.v16i3.1842","DOIUrl":"https://doi.org/10.7196/sajch.2022.v16i3.1842","url":null,"abstract":"\u0000 \u0000 \u0000 \u0000Background. The surgical management of children with bronchiectasis has seldom been reported.Objective. To describe the presentation, surgical management and outcomes in children with bronchiectasis presenting for surgery. Methods. We retrospectively reviewed the electronic records of 0 - 13-year-old children who underwent pulmonary resection for bronchiectasis at Inkosi Albert Luthuli Central Hospital, Durban, South Africa, between January 2004 and December 2014. Clinical, radiological and preoperative bronchoscopic findings, as well as surgical and histological outcomes, were analysed.Results. Eighty-eight patients underwent surgical resection. The female/male ratio was 3:2, with a mean age at surgery of 8.2 (range 2 - 13) years; 39 patients were HIV infected and 39 were HIV uninfected. Tuberculosis (TB) (n=68; 77.2%) was the most common cause of bronchiectasis, and recurrent chest infection (n= 45; 51.1%) was the most common clinical finding. Radiological examination confirmed isolated left-sided disease in 40 children (45.4%), isolated right-sided disease in 28 (31.8%) and bilateral disease in 20 (22.7%). Saccular disease with fibrocavitation (n=35; 39.7%) was the most common morphological disease type. Preoperative bronchoalveolar lavage samples confirmed a bacterial cause in 27 patients (30.6%). The most common operative procedures were primary pneumonectomy in 33 patients (37.0%), lobectomy in 30 (34.0%) and bilobectomy in 13 (14.7%). Seventy-five patients were asymptomatic after the operation and complications occurred in 13. Two children (2.2%), one with sepsis and the other with intraoperative hypoxia, died. Seventy patients underwent complete resection. At 1 month after surgery, 89.2% of patients were asymptomatic, while 77.7% of symptomatic patients were HIV positive.Conclusions. Complete pulmonary resection in children with advanced-stage bronchiectasis is safe, with a low morbidity and mortality. Surgery in HIV-positive patients was not associated with worse outcomes and is not contraindicated. HIV- and TB-preventive measures could reduce the burden of childhood bronchiectasis. \u0000 \u0000 \u0000 \u0000","PeriodicalId":44732,"journal":{"name":"South African Journal of Child Health","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43838467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determinants of diarrhoeal disease in children living in low-income households in a periurban community in Cape Town, South Africa","authors":"M. Hendricks, M. Sambo, R. Laubscher, S. Pendlebury, L. Bourne","doi":"10.7196/sajch.2022.v16.i3.1876","DOIUrl":"https://doi.org/10.7196/sajch.2022.v16.i3.1876","url":null,"abstract":"Background. Water, sanitation and hygiene are critically important in reducing morbidity and mortality from childhood diarrhoeal disease and malnutrition in low-income settings.Objectives. To assess the association of diarrhoeal disease with factors relating to domestic hygiene, the environment, sociodemographic status and anthropometry in children <2 years of age.Methods. This was a case-control study conducted in a periurban community 35 km from the centre of Cape Town, South Africa. The study included 100 children with diarrhoeal disease and 100 age-matched controls without diarrhoea, who were recruited at primary healthcare clinics. Sociodemographic status, environmental factors and domestic hygiene were assessed using a structured questionnaire; anthropometry was assessed using the World Health Organization’s child growth standards. Univariate and multivariate logistic regression analyses were performed to identify the factors associated with diarrhoea. Results. The results of the univariate logistic regression showed significant susceptibility to diarrhoea in study cases compared with controls when the caregiver was ≥25 years old (odds ratio (OR) 1.82; 95% confidence interval (CI) 1.02 - 3.23; p=0.042); when children were in day care or cared for by a family member or a relative than when cared for by their mother (OR 1.97; 95% CI 1.06 - 3.65; p=0.032); and when the mothers were employed rather than at home (OR 2.23; 95% CI 1.21 - 4.12; p=0.01). Multivariate logistic regression analysis was used to identify predictors of diarrhoea, which entailed relaxing the inclusion criteria for the univariate analysis variables (p<0.25). The predictors significantly associated with diarrhoea were household problems relating to rat infestation (OR 2.44; 95% CI 1.13 - 5.28; p=0.027); maternal employment (OR 2.47; 95% CI 1.28 - 4.76; p=0.007); and children in day care or cared for by a relative (OR 2.34; 95% CI 1.21 - 4.54; p=0.01). Significantly more of the mothers who were employed than those who were unemployed had children in day care or cared for by a relative.Conclusion. Practices relating to employment, childcare and the domestic environment were significant predictors of diarrhoea. Effective policy implementation on water, sanitation and domestic hygiene could prevent diarrhoeal disease and reduce its impact on children’s growth, especially during the annual diarrhoeal surge season in this and similar periurban communities.","PeriodicalId":44732,"journal":{"name":"South African Journal of Child Health","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43726461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical evaluation and outcomes in children ≤10 years old involved in road traffic accidents, presenting to Chris Hani Baragwanath Academic Hospital, Johannesburg, South Africa","authors":"Chris Hani Baragwanath, J. Carreira, D. Kruger, J. Loveland","doi":"10.7196/sajch.2022.v16i3.1826","DOIUrl":"https://doi.org/10.7196/sajch.2022.v16i3.1826","url":null,"abstract":"\u0000 \u0000 \u0000 \u0000Background. Road traffic accidents (RTAs) are a leading cause of injury and death globally, particularly among children. Pedestrians are most often injured, especially in middle- and low-income countries. The epidemiology, patterns and severity of injuries in children involved in RTAs in our community are hard to obtain.Objectives. To evaluate the aetiological spectrum, injury characteristics and treatment outcomes of paediatric patients involved in RTAs, who presented to Chris Hani Baragwanath Academic Hospital (CHBAH), a tertiary hospital in Soweto, South Africa. \u0000Methods. Patients ≤10 years old, who were involved in RTAs and seen at CHBAH, were included in the study.Results. The study was conducted from 20 August 2017 to 31 March 2018, and included the data of 156 patients. Their ages ranged from 13 days to 10 years (65% were boys). Pedestrian vehicle accidents accounted for 78.8% of the injuries, with 60.8% of the children being unaccompanied by an adult. Motor vehicle accidents accounted for 19.2% of the injuries, with 92% of the children being unrestrained in the vehicle. Of the patients, 73.2% (n=112/153) underwent radiography and 44.4% required computed tomography (CT) scans, the majority being CT scans of the brain for suspected head injuries. Soft-tissue injuries accounted for 78.9% of cases, followed mainly by head (39.7%) and limb (16%) injuries. Only 12% of patients required surgical intervention, with 42% of the operations being for orthopaedic injuries.Conclusion. The abovementioned data demonstrate that there is a lack of use of child restraints for children travelling as passengers in vehicles, and inadequate supervision of children on and around roads. This study supports other evidence, as it suggests that the paediatric population involved in RTAs is largely injured as pedestrians, and that males tend to be involved in more RTAs than females. The majority of injuries sustained involved the soft tissues, followed by head injuries. \u0000 \u0000 \u0000 \u0000","PeriodicalId":44732,"journal":{"name":"South African Journal of Child Health","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47549889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"HIV exposure and its association with paediatric ICU outcomes in children admitted with severe pneumonia at Chris Hani Baragwanath Academic Hospital, South Africa","authors":"K. Keeling, J. Price, K. Naidoo","doi":"10.7196/sajch.2022.v16i3.1890","DOIUrl":"https://doi.org/10.7196/sajch.2022.v16i3.1890","url":null,"abstract":"Background. Pneumonia is one of the leading causes of under-5 death in South Africa and accounts for a substantial burden of paediatric intensive care unit (PICU) admissions. However, little is known about PICU outcomes in HIV-exposed uninfected (HIV-EU) children with pneumonia, despite the growing size of this vulnerable population.Objectives. To determine whether HIV exposure without infection is an independent risk factor for mortality and morbidity in childrenadmitted to PICU with pneumonia.Methods. This retrospective review included all patients with pneumonia admitted to the PICU at Chris Hani Baragwanath AcademicHospital between 1 January 2013 and 31 December 2014. Patients were classified as HIV-unexposed (HIV-U), HIV-EU and HIV-infected.Medical records were reviewed to determine survival to PICU discharge, duration of PICU admission and duration of mechanicalventilation. Survival analysis was used to determine the association between HIV infection/exposure with mortality, and linear regression was used to examine the association with length of stay and duration of mechanical ventilation. This study included 107 patients: 54 were HIV-U; 28 were HIV-EU; 23 HIV-positive; and 2 had an unknown HIV status.Results. Overall, 84% (n=90) survived to PICU discharge, with no difference in survival based on HIV infection or exposure. Both HIV-EUand HIV-U children had significantly shorter PICU admissions and fewer days of mechanical ventilation compared with HIV-infectedchildren (p=0.011 and p=0.004, respectively).Conclusion. HIV-EU children behaved similarly to HIV-U children in terms of mortality, duration of PICU admission and length ofmechanical ventilation. HIV infection was associated with prolonged length of mechanical ventilation and ICU stay but not increasedmortality","PeriodicalId":44732,"journal":{"name":"South African Journal of Child Health","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47261127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The knowledge and practices of caregivers regarding the administration of oral liquid medication to children at a healthcare clinic in Bloemfontein, South Africa","authors":"W. Bezuidenhout, J. Cummings, L. De Klerk, D. Finlay, C. Lewis, L. Pienaar, A. Bouwer, R. Coetzee, G. Joubert","doi":"10.7196/sajch.2022.v16i3.1879","DOIUrl":"https://doi.org/10.7196/sajch.2022.v16i3.1879","url":null,"abstract":"Background. Children are dependent on their caregivers to accurately administer medication to them.Objectives. To determine the knowledge and practices of primary caregivers regarding their methods of oral liquid medication administration, preferred measuring utensils, accuracy of preferred measuring utensils and different medication classifications that they collected. The study was conducted at Pelonomi Polyclinic Pharmacy, Bloemfontein, South Africa.Methods. A quantitative, cross-sectional descriptive study (with analytical aspects) was conducted, which used consecutive, convenient sampling. The pharmacy staff assisted in recruiting participants, after which a screening form was used to determine their eligibility. Participants were provided with an information document and consent form. The liquid medication was classified according to a drug classification list, and one medication was selected for the focus of the structured interview. The questionnaire was completed using REDCap. Thereafter, researchers used the information on the medication label to determine the accuracy of the caregiver’s answers.Results. The majority of the 89 participants (56.2%) answered all 3 administration-related questions correctly, with 84.3% answering the questions regarding quantity and frequency correctly. The medication measure (43.8%) was the preferred measuring utensil for any liquid medication at home, and the syringe (53.9%) for the selected liquid medication used in the interview, both accurate measuring utensils. Most children (56.2%) were prescribed ‘other medication’ (e.g. vitamins and mineral supplements), followed by analgesics (47.2%) and antibiotics (42.7%).Conclusion. Primary caregivers at Pelonomi Polyclinic Pharmacy know how to administer oral liquid medication to children accurately. Most caregivers indicated that they use accurate measuring utensils","PeriodicalId":44732,"journal":{"name":"South African Journal of Child Health","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41398985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"South African neonates with mild and moderate hypoxic-ischaemic encephalopathy","authors":"R. Malan, J. van der Linde, A. Kritzinger, M. Coetzee, M. Graham, E. Krüger","doi":"10.7196/sajch.2022.v16i3.1901","DOIUrl":"https://doi.org/10.7196/sajch.2022.v16i3.1901","url":null,"abstract":"Background. Clear risk profiles of neonates with mild and moderate hypoxic-ischaemic encephalopathy (HIE) are lacking.Objective. To describe and compare factors associated with mild and moderate HIE in South African neonates.Methods. A prospective, comparative design was used to describe factors among South African neonates with mild (n=13) and moderate (n=33) HIE in an urban tertiary academic hospital. HIE diagnosis and encephalopathy grading were conducted using the modified Sarnat stages. Thompson scores were recorded. Participants’ clinical records were reviewed to identify factors. Descriptive data were obtained. Chi-square and Fisher’s exact tests were used to compare categorical data, and Mann-Whitney tests were used to compare continuous data between groups.Results. Significant differences were found between groups’ admission (p<0.001) and highest Thompson scores (p<0.001). The mild group’s APGAR scores were significantly higher than those of the moderate group at five (p=0.012) and ten minutes (p=0.022). Duration of resuscitation (p=0.011) and time to spontaneous respiration (p=0.012) also differed significantly between groups. Significantly more moderate than mild participants received therapeutic hypothermia (TH) (p<0.001).Conclusion. Clinical tests and management factors differed significantly between groups. The findings provided the multidisciplinary team with an increased understanding of the heterogeneous HIE population and add to existing evidence for identifying neonates eligible for TH in resource-limited settings.","PeriodicalId":44732,"journal":{"name":"South African Journal of Child Health","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41807107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peer pressure and social acceptability between hookah pipe users and non-users among a sample of South African adolescents","authors":"HL Davids, NV Roman, EG Rich R","doi":"10.7196/sajch.2022.v16.i3.1709","DOIUrl":"https://doi.org/10.7196/sajch.2022.v16.i3.1709","url":null,"abstract":"Background. Hookah pipe smoking is a high-risk phenomenon which is widely seen as an acceptable social practice, but the extent of its acceptability is not very clear among South African youth, nor is the influence of peers very clear.Objective. To establish a link between social acceptability and peer pressure and to compare this relationship among hookah pipe users and non-users in a sample of South African adolescents.Methods. A cross-sectional comparative correlation study was conducted among Grade 9 adolescents attending secondary schools in the Metro East Education District in Cape Town. The final sample comprised 270 participants. A questionnaire was used to collect data which were analysed using SPSS.Results. No relationship was found between peer pressure and social acceptability, but a relationship was found between parental rules and monitoring around tobacco use for hookah pipe users. A significant difference was also found in attitudes towards hookah use among users and non-users.Conclusion. This descriptive study of hookah pipe users and non-users among Grade 9 adolescents is a further study in the quantitative research approach and may be helpful in gaining more insight into understanding how parental rules and monitoring are put in place and why users’ and non-users’ attitudes towards tobacco use differ significantly. The implications and significance of this study are further explained.","PeriodicalId":44732,"journal":{"name":"South African Journal of Child Health","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47684788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Child development at age 5 years: The effects of maternal education, socioeconomic status and early-life growth examined prospectively in a lowresource setting","authors":"W. Slemming, S. Norris, K. Kagura, H. Saloojee, L. Richter","doi":"10.7196/sajch.2022.v16i2.1846","DOIUrl":"https://doi.org/10.7196/sajch.2022.v16i2.1846","url":null,"abstract":"\u0000Background. Deeper insight into relationships between social factors and early childhood growth and development is required, particularly in low-resource settings. \u0000Objectives. To determine (i) associations between early linear growth and child development at 5 years; and (ii) whether early childhood growth mediates relationships between maternal education, household socioeconomic status (SES) and subsequent child development. \u0000Methods. This study used data from the Birth to Twenty Plus study, a longitudinal South African birth cohort study. The study sample comprised 636 participants with complete data at all relevant time points for the analysis. Household SES and maternal education were measured during pregnancy and the first two years of life, and growth between birth and 4 years of age. Child development was assessed using the Revised Denver Pre-screening Developmental Questionnaire (R-DPDQ). Multivariable regression analyses were used to investigate the association between SES, maternal education, growth and child development, and structural equation modelling was used to analyse the mediation of growth. \u0000Results. In both sexes, higher birthweight and household SES were associated with higher R-DPDQ scores. Increased relative linear growth, particularly between 0 and 2 years, was associated with higher R-DPDQ scores among boys (β=0.82; 95% confidence interval (CI): 0.27 - 1.37) at age 5. Growth status but not SES mediated the association between maternal education and R-DPDQ scores. \u0000Conclusion. Child development at 5 years was independently associated with SES and birthweight. The negative effects of lower maternal education on child development was attenuated by better growth. \u0000","PeriodicalId":44732,"journal":{"name":"South African Journal of Child Health","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45744026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}