眼科学期刊(英文)最新文献

{"title":"Knowledge, Attitudes and Practices of Health Care Staff about Glaucoma in Lomé","authors":"M. Amedome, Yao Ako Patrick Mensah, K. Vonor, N. Maneh, K. Dzidzinyo, Kassoula Batomaguela Nonon Saa, K. D. Ayéna, K. Balo","doi":"10.4236/OJOPH.2021.112013","DOIUrl":"https://doi.org/10.4236/OJOPH.2021.112013","url":null,"abstract":"Introduction: Glaucoma is a major cause of irreversible blindness worldwide. Early detection and awareness are essential to reduce the impact on eye health. The aim of this study is to assess the knowledge, attitudes and practices of health care staff about glaucoma in Lome. Materials and Methods: This was a prospective cross-sectional and descriptive study including health care staff in Lome, from October 1st to December 31st, 2020, for a period of 3 months. After their agreement, the officers responded to questions based on a survey sheet. Results: A total of 169 agents from 3 centers in Lome, i.e. the Sylvanus Olympio University Teaching Hospital, the Campus University teaching Hospital and the Be Hospital were involved. 50.9% of the agents were male versus 49.1% female, i.e. a ratio of 1.04. The average age was 33.66 ± 10.45 years. 46.10% were doctors versus 53.90% paramedics. 58.60% had at most 5 years of experience against 41.40% who had more than 5 years of experience. 53.80% defined glaucoma as ocular hypertension while 17.20% defined it as optic nerve disease. 46.20% did not know that there were many types of glaucomas compared to 53.20% who knew that there are many types of glaucomas. 92.30% knew that glaucoma can lead to cause visual loss. Regarding attitudes and practices about glaucoma, 91.70% declared that the follow-up should be done by the ophthalmologist, 81.10% thought that it would be necessary to be checked by the doctor only every 6 months. Finally, 65.08% declared that they had to use eye drops for life for the treatment. Conclusion: Steps should be taken to educate staff more about glaucoma attitudes and practices and also plan for action in the population.","PeriodicalId":60672,"journal":{"name":"眼科学期刊(英文)","volume":"11 1","pages":"163-175"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41532197","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":"Management of Cataracts in Pediatric Patients with Developmental Delay at a Tertiary Care Pediatric Hospital","authors":"S. Panneerselvam, Madhuri Chilakapati, Alexis Moisiuc, K. Yen","doi":"10.4236/OJOPH.2021.112012","DOIUrl":"https://doi.org/10.4236/OJOPH.2021.112012","url":null,"abstract":"Background: Childhood cataract causing visual impairment can compound developmental delay (DD) if left untreated. Current literature in children with DD is limited; thus, we evaluated cataract etiology, challenges, and treatment compliance in this group. Purpose: To report the presentation and challenges associated with cataract management in children with developmental delay (DD) at a tertiary care pediatric hospital. Methods: Retrospective review of 100 patients (173 eyes) presenting with cataracts and DD from February 2014 to December 2017. Results: 100 patients (173 eyes) were included. 27 patients had unilateral cataracts and 73 bilateral. The average age was 120.55 months (SD 63.77, range 5.87 - 243.16); the average follow-up period was 57.7 months (SD 139.14, range 1.03 - 1412.30). 61% of patients (55% eyes) underwent medical management for cataracts due to: cataract was not visually significant (66% eyes), parent deferred surgery (11% eyes), self-abusive behavior (14% eyes), and medical conditions that limited visual recovery (9% eyes). 32% of patients were unable to perform objective visual acuity by age 5. Patients with self-abusive behavior were more likely to present with or develop retinal detachment (RD) (35%) compared to those without self-abusive behavior (6%) (p = 0.0028). A statistically significant difference in the difficulty of examination (p < 0.0001) and poor compliance of glasses wear (p < 0.0001) was found in nonverbal patients. Surgical complications occurred in 39% of eyes. Those with intraocular lens placement after cataract extraction were more likely to develop visual axis opacification (27% eyes) than those who remained aphakic (9% eyes) (p = 0.0313). Conclusion: Cataract extraction in pediatric patients with DD can be associated with success, however, providers should prepare for limitations in managing these patients.","PeriodicalId":60672,"journal":{"name":"眼科学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42300592","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":"A Comparative Analysis of Anxiety and Depression among Glaucoma and Cataractous Patients in Southwest Nigeria","authors":"A. Okudo, O. Babalola, A. Ogunro","doi":"10.4236/OJOPH.2021.112009","DOIUrl":"https://doi.org/10.4236/OJOPH.2021.112009","url":null,"abstract":"Background: Glaucoma is the leading cause of irreversible blindness worldwide. An appreciable proportion of glaucoma patients have been found to have hidden psychiatric disorders that often go undetected. Anxiety and depression have been found to be major contributors to these psychological issues. This present study aims to compare the prevalence of anxiety and depression amongst glaucoma and cataract patients and to identify risk factors for anxiety and depression amongst these patients. Materials and Methods: A comparative crossectional study was carried out among 197 Primary Open Angle Glaucoma (POAG) patients and 197 controls (non-POAG patients that have no ocular disorder other than cataract) attending Deseret Community Vision Institute, Ijebu Imushin, Ogun state from 1st of April to 31st May 2014. POAG was defined as patients with open anterior chamber angles based on gonioscopy, pale and cupped discs (Cup: Disc ratio ≥ 0.4), and corresponding visual field defects with or without an elevated intraocular pressure. Cataract was defined as patients with opacification of the crystalline lens in either or both eyes. The Hospital Anxiety and Depression Scale (HADS) was used to assess anxiety and depression among the participants. Data were analyzed using SPSS Version 20 using Chi-square, Independent student T-test and Logistic regression. Results: The mean age of glaucoma subjects was 62.24 years and the cataract subjects was 64.2 years. There was a male preponderance with a male: female ratio of 1.5:1. Anxiety as defined by the HADS was seen in 35.5% of glaucoma patients and 21.8% of the cataract patients but there was no statistically significant difference after controlling for sociodermographic and clinical characteristics on logistic regression. The risk factors for anxiety among the glaucoma participants were those younger than 60 (OR 2.9, 95% CI: 1.3 - 6.5 p = 0.009) and those with severe glaucoma (OR 9.5, 95% CI: 1.7 - 54.4 p = 0.011). The risk factors for anxiety among cataract patients were sociodermographic factors. Those employed (OR 6.4. 95% CI: 2.1 - 20.0 p = 0.001) and those separated and divorced (OR 10.3, 95% CI: 1.4 - 78.4 p = 0.002). Visual status was not a risk factor amongst the cataract participants. Depression as defined by HADS was seen in 24.4% of glaucoma participants and 3.6% of cataract participants. Glaucoma participants were four times more likely to be depressed than the cataract participants after controlling for clinical and sociodermographic variables (OR 4.0, 95% CI: 1.5 - 10.8 p = 0.007). The risk factors for depression among the glaucoma participants were those younger than 60 (OR 4.7, 95% CI: 1.7 - 13.5 p = 0.004), those with primary (OR 6.6, 95% CI: 1.5 - 28.4) p = 0.010) and secondary education (OR 8.0, 95% CI: 2.1 - 29.9 p = 0.002) as compared to those with tertiary education, those unemployed (OR 2.0, 95% CI: 1.0 - 7.2 p = 0.042) as compared to those employed. Those blind (OR 10.8. 95% CI: 2.8 - 42.4 p =","PeriodicalId":60672,"journal":{"name":"眼科学期刊(英文)","volume":"11 1","pages":"105-133"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49056608","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":"Crystalline Lens Vitamin C Levels in Cataract Surgical Patients","authors":"B. Emma-Okon, O. Onakpoya, B. Kolawole, M. Akinde, O. J. Agunbiade, F. Owolabi","doi":"10.4236/OJOPH.2021.112010","DOIUrl":"https://doi.org/10.4236/OJOPH.2021.112010","url":null,"abstract":"To determine the amount of Vitamin C in the lenses of Diabetic and Non-Diabetic Patients with Operable Cataract and ascertain association between Vitamin C levels and Blood Glucose, Glycated Haemoglobin and Intraocular pressure. Thirty Diabetic and Thirty Non-Diabetic Patients cataract surgical patients were matched for age and sex and selected for the study. Plasma fasting blood glucose and whole blood glycated Haemoglobin levels were determined by glucose oxidase enzymatic assay and immunodetection methods respectively. Cataractous lens samples obtained during surgery were weighed and homogenized in 10 volumes of phosphate buffer pH 7 and the resulting homogenate centrifuged at 18,000 g for 5 minutes at 4˚C, separated and supernatant stored at -80˚C. Vitamin C assay was carried out using commercial assay kits. Data was analyzed using SPSS version 23. Age range of participants was 55 - 83 years, with a mean of 66.7 ± 1.8 years. Mean Vitamin C levels in the Diabetic and Non-Diabetic groups were 49.5 μg/g ± 6.47 and 57.02 μg/g ± 8.0 respectively. Although the Non-diabetic group had higher levels of Vitamin C, the difference was not significant. Levels of Vitamin C found in both groups are much lower than what has previously been reported in Literature for clear lenses. There was negative association between Vitamin C and Glucose, Glycated Haemoglobin and Intraocular Pressure. Vitamin C supplementation may be useful in prolonging incidence of cataract in both aging and diabetic Nigerian populations. Larger study involving estimation of Vitamin C in both lens and Plasma samples is desirable.","PeriodicalId":60672,"journal":{"name":"眼科学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43089223","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":"Induced Myopia among Readymade Garment (RGM) Workers","authors":"Anisur Rahman, S. Rahman, Jamsed Faridi, Faria Tilat Toma, A. Huq, Ashraful Islam Khondokar","doi":"10.4236/OJOPH.2021.112007","DOIUrl":"https://doi.org/10.4236/OJOPH.2021.112007","url":null,"abstract":"Background: To determine the induced refractive error among the readymade garment workers. Those who are working in the knitting section and those who are working other than the knitting and computer section. Methods: It was a prospective cross-sectional analytic study among 600 workers in 2 factories at Joydevpur, Gazipur, Bangladesh on January 2020. Group: A comprises 300 workers who were working at knitting section for a minimum of six hours a day and 5 days a week. Group: B comprises another 300 workers who were appointed for loading-unloading, care-taker, driver and security guard also. Prevalence of refractive error in two groups was compared. Results: The mean age of participants in group: A was 26.61 ± 4.99 (CI 95%, 26.04 ± 27.18) and in group: B was 28.51 ± 5.69 (95% CI 27.86 ± 29.15). Prevalence of refractive error between two groups was 52 and 28.3 respectively. The chi-square statistic is 44.9775. The p-value is <0.00001. Significant at p < 0.05. Strong positive correlation shows in Pearson’s correlation between time duration of knitting and refractive error (R is: 0.7619). Visual acuity between two groups chi-square statistic is 33.1866. The p-value is <0.00001. Significant at p < 0.05. Conclusion: Knitting workers at readymade garment (RGM) are more prone to develop late onset myopia than other workers in the same premises.","PeriodicalId":60672,"journal":{"name":"眼科学期刊(英文)","volume":"11 1","pages":"91-98"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41636000","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":"Diagnosis of Large Papillary Excavations in Developing Countries: From Automated Visual Field to OCT of the Ganglion Complex. About a Case","authors":"K. M. Amedome, Kassoula Batomaguela Nonon Saa, K. Dzidzinyo, K. Vonor, N. Maneh, K. D. Ayéna, K. Balo","doi":"10.4236/OJOPH.2021.112011","DOIUrl":"https://doi.org/10.4236/OJOPH.2021.112011","url":null,"abstract":"Background: Large papillary excavations constitute a true differential diagnosis of glaucoma in our environments. Aim: To present a clinical case of large papillary excavation simulating glaucomatous optic neuropathy in a young subject. Case Presentation: The ophthalmologic examination made it possible to note a visual acuity of LogMar 0.00, ocular hypertonia and a large papillary excavation in both eyes. The visual field noted bilateral perimetric involvement suggesting optic neuropathy. Optical coherence tomography (OCT) of the ganglion complex revealed an absence of involvement of the ganglion complex and the ganglion ridge essential to evoke optic neuropathy. An ocular hypotonizing treatment made it possible to normalize the intraocular pressure. Conclusion: The particularity of this observation lies in the fact that the perimeter involvement that preceded any involvement can simulate a glaucomatous involvement. Functional damage to the visual field must be correlated with structural damage to suggest glaucomatous damage in our ophthalmic patients.","PeriodicalId":60672,"journal":{"name":"眼科学期刊(英文)","volume":"11 1","pages":"143-151"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49087562","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":"A new classification for retinitis pigmentosa including multifocal electroretinography to evaluate the disease severity","authors":"A. Oner, N. Kahraman","doi":"10.21203/RS.3.RS-437862/V1","DOIUrl":"https://doi.org/10.21203/RS.3.RS-437862/V1","url":null,"abstract":"\u0000 Aim: To establish a useful and objective classification for retinitis pigmentosa (RP) to evaluate the disease severity.Methods: This is a retrospective cross-sectional study. Visual acuity (VA), visual field width, ellipsoid zone width on optic cohorence tomography and multifocal electroretinography values were obtained from medical records of patients with RP. A scoring criterion was developed wherein each variable was assigned a score from 0 to 5 depending on its distribution. The cumulative score (from 0 to 20) was used to classify disease severity from grade 0 to 5. The scores were correlated with each other and the final grade.Results: Data of 152 eyes of 92 patients who had the results of all tests were reviewed. The mean age was 41.2 years. The mean VA of the patients was 0.13±0.16 Snellen lines. The majority of patients had a VA less than 20/40 (88.6%), a visual field smaller than 20° (78%), and an ellipsoid zone width smaller than 7° (84.4%). The majority of the patients (85.4%) were in advanced stage of the disease (Grade 4 and 5). Conclusions: We present a simple, objective and easy to use disease severity classification for RP which can be used to categorise patients and to evaluate and compare treatment results.","PeriodicalId":60672,"journal":{"name":"眼科学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41494808","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 Awareness of Keratoconus among General Population in Saudi Arabia","authors":"R. Alruwaili, A. AlHarbi, Omar A Alghamdi, Yahya A. Alyahya, N. Albalawi, S. Alostaz, O. Asiri, K. Alarfaj","doi":"10.4236/OJOPH.2021.111005","DOIUrl":"https://doi.org/10.4236/OJOPH.2021.111005","url":null,"abstract":"Introduction: Keratoconus (KCN) is one of the degenerative corneal disorders, which causes impairment in normal visual acuity with a higher prevalence in Saudi Arabia. The study aimed to assess the awareness and knowledge regarding KCN, its risk factors, and management among the Saudi population. Materials and Methods: A survey was conducted using a pre-tested and validated questionnaire distributed through online platforms. A mixture of convenience and snowball sampling techniques was adopted for sample collection. Our analysis included a final sample size of 837 participant responses. The questionnaire had items related to sociodemographic characteristics (5 items), knowledge (10 items), and source of information (1 item). The mean knowledge scores were calculated and categorized (good, fair, and poor) to assess each participant’s knowledge. Pearson’s chi-square test was used to determine the statistical association between categorical variables. Results: The mean knowledge score was found to be 4.12 ± 2.6, and 67.5% of the participants showed “poor” scores. There was no statistically significant association of knowledge scores observed with any of the sociodemographic details. It was agreed by 76% and 42.5% that genetic predisposition and chronic eye inflammation could predispose to KCN. Only 38.1% (n = 157) agreed that KCN could be treated with optical glasses or contact lenses in the initial stages. Conclusion: The knowledge regarding KCN was not satisfactory among our study population. There is a need to create an increased level of awareness for KCN. Health awareness programs and community campaigns should be organized to raise awareness regarding KCN and better eye health care utilization.","PeriodicalId":60672,"journal":{"name":"眼科学期刊(英文)","volume":"11 1","pages":"49-59"},"PeriodicalIF":0.0,"publicationDate":"2021-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46412175","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":"Screening of Diabetic Retinopathy in Patients with Type 2 Diabetes in a Community of the Paraíba Semi-Arid Using Original Score","authors":"Milena Souza Amorim, S. C. Sobrinho, M. Cavalcanti, A. Motta, D. Gadelha, C. Brandt","doi":"10.4236/OJOPH.2020.111001","DOIUrl":"https://doi.org/10.4236/OJOPH.2020.111001","url":null,"abstract":"Introduction: Diabetic retinopathy (DR) is neglected in the planning of health services in Brazil. The purpose of this study was to investigate the frequency of Diabetic Retinopathy in patients with type 2 diabetes mellitus (DM2) registered in the Unified Health System (SUS) of the semi-arid of Paraiba (PB-Brazil), using a score developed by the researchers to track this condition. Methods: A cross-sectional study was carried out, in which DM2 patients registered at SUS in the city of S?o Mamede-PB was recruited. Ophthalmological and clinical data were collected, including: body mass index (BMI), waist circumference (WC), waist circumference/height ratio (WC/stature), smoking history, physical activity, time of diabetes and its control, blood pressure values and comorbidities. With these data, an original score for DR screening (DRSS) was performed. Qualitative variables were expressed by absolute and relative frequencies, and quantitative variables were expressed by means and standard deviations. p value ≤ 0.05 was used to reject the null hypothesis. Results: Ninety seven (64.7%) type 2 diabetic patients were recruited. Participants were predominantly women (64.9%), with a mean age of 65.8 years, of short stature (mean of 1.56 m), high BMI, with a predominance of the WC/stature ratio equal to or greater than 0.60, smokers and patients with systemic arterial hypertension (SAH). The main ophthalmological findings were: vascular changes compatible with Grade I/II Hypertensive Retinopathy (72.1%) and cataracts in about 50% of the eyes. The prevalence of DR was 12.4%. According to the DRSS results, it was found that most patients (85.6%) had a high risk score equal to or greater than 60 of developing DR. It was observed that the variables: WC, physical activity, time of diabetes and SAH showed a significant association with the risk of developing DR. In addition, BMI and WC/height ratio with higher values had a high risk of developing DR. Conclusion: There was association between medium and high DRSS risk diabetics with the probability of developing DR, recommending that all people with these characteristics should be referred to the specialist in order to screen for DR and other morbidities caused by diabetes.","PeriodicalId":60672,"journal":{"name":"眼科学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48319964","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":"Aplication of in Vivo Confocal Microscopy in Ophtalmology—Overview","authors":"Ralitsa D. Kermedchieva, M. Konareva-Kostianeva, M. Atanassov, Vesela Mitkova-Hristova, N. Stoyanova","doi":"10.4236/OJOPH.2021.111006","DOIUrl":"https://doi.org/10.4236/OJOPH.2021.111006","url":null,"abstract":"Confocal microscopy is a method which has been increasingly used over the last decade in the study of the anterior ocular surface. The method allows testing and in vivo high resolution imaging of the structures of the anterior eye segment, at a cellular level, which is close to the histological examination of tissues. The data provided by this method allow for a better understanding of both the functional and pathological processes occurring in the anterior ocular surface not only for scientific purposes but also in clinical practice. The aim of the present work is to summarize the current knowledge and applications of confocal microscopy of the anterior ocular surface.","PeriodicalId":60672,"journal":{"name":"眼科学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49187839","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}