{"title":"A shared reading intervention: Changing perceptions of caregivers in a semi-rural township.","authors":"Tarryn Coetzee, Sharon Moonsamy, Joanne Neille","doi":"10.4102/sajcd.v70i1.948","DOIUrl":"10.4102/sajcd.v70i1.948","url":null,"abstract":"<p><strong>Background: </strong> Many caregivers from low-middle income (LMI) households consider that preschool children are too young for shared book reading. Thus, many caregivers are unaware of their potentially powerful role in their children's emergent literacy and communication.</p><p><strong>Objectives: </strong> To describe (1) caregivers' perceptions of shared reading, (2) caregivers' perceptions of barriers to shared reading and (3) changes in these perceptions following a short intervention.</p><p><strong>Method: </strong> A qualitative methodology was used to understand the perceptions of 40 caregivers from a semi-rural South African township. Two semi-structured interviews were conducted before and after intervention. The intervention was a short training video about shared reading.</p><p><strong>Results: </strong> Caregivers described the unfamiliar reading culture and viewed reading as an educational activity that they knew little about. Barriers to shared reading included lack of time, few reading materials and low levels of literacy or lack of exposure to this type of activity. Following the intervention, they acknowledged the importance of shared reading, described growing confidence in their shared reading abilities and closer relationships with their children.</p><p><strong>Conclusion: </strong> Speech-language therapists (SLTs) have a pivotal role to play in caregiver training of emergent literacy skills and can make a marked impact in guiding caregivers' shared reading. A short video-based intervention can alter caregiver perceptions and practices, which may be the first step in changing behaviours.Contribution: The study provides an example of a simple and cost-effective intervention that changed caregiver perception and caregivers' reported shared reading practice.</p>","PeriodicalId":44003,"journal":{"name":"SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS","volume":"70 1","pages":"e1-e9"},"PeriodicalIF":1.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9900288/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10724677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Acknowledgement to reviewers.","authors":"Editorial Office","doi":"10.4102/sajcd.v69i1.952","DOIUrl":"https://doi.org/10.4102/sajcd.v69i1.952","url":null,"abstract":"<p><p>No abstract available.</p>","PeriodicalId":44003,"journal":{"name":"SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS","volume":"69 1","pages":"952"},"PeriodicalIF":1.1,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10475255","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}
Anita Edwards, Faheema Mahomed-Asmail, Anna-Mari Olivier, Jeannie Van der Linde, Katijah Khoza-Shangase, Nomfundo Moroe, Joanne Neille
{"title":"In pursuit of best practice through contextually relevant, accountable and responsive research.","authors":"Anita Edwards, Faheema Mahomed-Asmail, Anna-Mari Olivier, Jeannie Van der Linde, Katijah Khoza-Shangase, Nomfundo Moroe, Joanne Neille","doi":"10.4102/sajcd.v69i1.945","DOIUrl":"https://doi.org/10.4102/sajcd.v69i1.945","url":null,"abstract":"<p><p>No abstract available.</p>","PeriodicalId":44003,"journal":{"name":"SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS","volume":"69 1","pages":"e1-e2"},"PeriodicalIF":1.1,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9772731/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10420959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mariaan Cloete, Esedra Krüger, Jeannie Van der Linde, Marien A Graham, Sarveshvari B Pillay
{"title":"South African speech-language therapists' practices regarding feeding tube placement in people with advanced dementia.","authors":"Mariaan Cloete, Esedra Krüger, Jeannie Van der Linde, Marien A Graham, Sarveshvari B Pillay","doi":"10.4102/sajcd.v69i1.927","DOIUrl":"https://doi.org/10.4102/sajcd.v69i1.927","url":null,"abstract":"<p><strong>Background: </strong> Studies related to tube feeding in people with dementia (PWD) remain a contested topic, neglecting the importance of speech-language therapists' (SLTs) role in dysphagia management. Furthermore, SLT practices and beliefs regarding tube feeding in people with advanced dementia in an upper-middle-income country, such as South Africa, are unexplored.</p><p><strong>Objective: </strong> This study aimed to determine the practices and beliefs of SLTs in South Africa regarding tube feeding placement in PWD.</p><p><strong>Method: </strong> A self-compiled online survey was distributed using social media platforms and was completed by 83 South African SLTs with experience in swallowing and feeding management of PWD.</p><p><strong>Results: </strong> Most SLTs (78.8%) strongly believed they play a vital role in the decision-making regarding feeding tube insertion in PWD. This role is often met with several challenges, such as limited support from other healthcare professionals. Speech-language therapists with more experience and increased involvement in palliative care appeared to be more confident in supporting and counselling families of PWD on tube feeding. Many SLTs still recommend tube feeding despite its known negative consequences for PWD.</p><p><strong>Conclusion: </strong> The findings indicate a need for continued professional development for South African SLTs on feeding decisions in advanced dementia to increase knowledge and confidence in clinical practice. Speech-language therapists require guidelines by professional bodies and further dialogue amongst healthcare professionals to guide difficult feeding decisions in people with advanced dementia.</p>","PeriodicalId":44003,"journal":{"name":"SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS","volume":"69 1","pages":"e1-e10"},"PeriodicalIF":1.1,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9772722/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10420958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Contralateral suppression of transient evoked otoacoustic emissions in adults: A normative study.","authors":"Simone Zevenster, Alida Naudé","doi":"10.4102/sajcd.v69i1.929","DOIUrl":"10.4102/sajcd.v69i1.929","url":null,"abstract":"<p><strong>Background: </strong> Whilst otoacoustic emission (OAE) testing has proved to be valuable in revealing information about cochlear outer hair cell integrity, it does not provide insight into the afferent and efferent pathways once the stimulus has reached neural receptors. This information can be obtained objectively through contralateral acoustic stimulation (CAS) suppression. However, obtaining normative data is essential in the implementation of such tests.</p><p><strong>Objectives: </strong> The primary aim was to undertake a small pilot study to collect the CAS suppression across a predefined frequency range in order to provide a preliminary normative data set to be used with the newly developed transient evoked otoacoustic emission (TEOAE)-CAS module (PATH MEDICAL, Germering, Germany). Secondary aims included the analysis of the relationships between left and right CAS suppression, between male and female CAS suppression and between TEOAE signal-to-noise ratio (SNR) and CAS suppression.</p><p><strong>Methods: </strong> The purpose of this study was to determine preliminary normative data for contralateral TEOAE suppression from 40 normal ears of 20 healthy young adults (10 males and 10 females). Subjects were recruited using purposive sampling. The CAS suppression responses were obtained automatically by means of the data-collection protocol on the device used. From the data obtained, correlations between TEOAE SNR and CAS suppression were made using Pearson's correlation coefficient.</p><p><strong>Results: </strong> The data were statistically processed to form a normative database which possesses the potential of serving as a basis for further research aimed at determining the utility of CAS suppression testing when evaluating ear pathology. A mean CAS suppression of 0.8 decibels (dB) (0.61 SD) was obtained. There was no statistically significant relationship between TEOAE SNR and CAS suppression. There was no significant suppression difference in terms of laterality of ears or gender.</p><p><strong>Conclusion: </strong> Normative values for CAS suppression of TEOAEs in a group of normal-hearing individuals were obtained using the newly developed TEOAE-CAS module (PATH MEDICAL, Germering, Germany). The availability of normative data for contralateral TEOAE suppression using the studied module allows for it to become commercially available, which will enable researchers and audiologists to perform this measurement in different populations in the evaluation of ear pathology.</p>","PeriodicalId":44003,"journal":{"name":"SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS","volume":"69 1","pages":"e1-e8"},"PeriodicalIF":1.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9772714/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10420962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bea Staley, Marise Fernandes, Ellen Hickey, Helen Barrett, Karen Wylie, Julie Marshall, Mershen Pillay, Harsha Kathard, Ryann Sowden, David Rochus, Carol E Westby, T Rosario Roman, Sally D Hartley
{"title":"Stitching a new garment: Considering the future of the speech-language therapy profession globally.","authors":"Bea Staley, Marise Fernandes, Ellen Hickey, Helen Barrett, Karen Wylie, Julie Marshall, Mershen Pillay, Harsha Kathard, Ryann Sowden, David Rochus, Carol E Westby, T Rosario Roman, Sally D Hartley","doi":"10.4102/sajcd.v69i1.932","DOIUrl":"https://doi.org/10.4102/sajcd.v69i1.932","url":null,"abstract":"<p><p>Providing equitable support for people experiencing communication disability (CD) globally is a historical and contemporary challenge for the speech-language therapy profession. A group of speech-language therapists (SLTs) with ongoing and sustained experiences in Majority and Minority World contexts participated in five virtual meetings in 2021. The aim of these meetings was to develop provocative statements that might spur a global discussion among individuals and organisations that support people experiencing CD. The following questions were discussed: What is our vision for the future of the profession globally? What are the global challenges around access to speech-language therapy services?Four main themes emerged: (1) the need to centre people experiencing CD as the focal point of services, (2) participation, (3) equity and (4) community. The themes relate to the need for a process of de-imperialism in the profession. Suggestions were made to develop more suitable terminology and to establish a global framework that promotes more equitable access to communication services. We seek the adoption of approaches that focus on reciprocal global engagement for capacity strengthening. Alternative models of culturally sustaining and equitable service delivery are needed to create impact for people experiencing CD, and their families worldwide.Contribution: Provocative statements were developed to prompt global conversations among speech-language therapy professionals and associations. We encourage readers to consider the questions posed, share their viewpoints and initiate positive change towards a global strategy.</p>","PeriodicalId":44003,"journal":{"name":"SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS","volume":" ","pages":"e1-e5"},"PeriodicalIF":1.1,"publicationDate":"2022-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9724130/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40456952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Exploring swallowing, feeding and communication characteristics of toddlers with severe acute malnutrition.","authors":"Casey J Eslick, Esedra Krüger, Alta Kritzinger","doi":"10.4102/sajcd.v69i1.874","DOIUrl":"https://doi.org/10.4102/sajcd.v69i1.874","url":null,"abstract":"Background Severe acute malnutrition (SAM) is associated with cognitive and motor deficits. Little is known about the swallowing, feeding and communication characteristics of hospitalised toddlers with SAM, limiting the abilities of speech-language therapists to provide effective early intervention. Objective To explore the background, swallowing, feeding and communication characteristics of toddlers with SAM during in-patient nutritional rehabilitation. Method An exploratory, prospective, collective case-study was conducted with three hospitalised toddlers who were 12–18 months old and independently diagnosed with SAM, at least 1 week after transitioning to oral feeding. Detailed case histories were compiled through medical file perusal and parent interviews. Cross-sectional clinical bedside assessments were completed with the Rossetti Infant-Toddler Language Scale and Schedule for Oral-Motor Assessment. Results All three participants had a history of feeding difficulties before admission. Despite intact pharyngeal swallows, heterogeneous oral-sensorimotor dysfunction and disruptive feeding behaviours were identified. Risk for oropharyngeal dysphagia indicates the need to modify dietary consistencies to prevent prolonging recovery or SAM relapse. Participants had mild-to-moderate language delays, particularly in interaction-attachment, play and language comprehension, with an atypical moderate receptive and mild expressive language delay profile. None of the participants were referred for speech-language therapy. Conclusion This exploratory research showed the oral-sensorimotor skills, swallowing and communication characteristics of children with SAM. Speech-language therapists could address oral-sensorimotor functioning, feeding difficulties and communication interaction delays before discharge to community-based management for SAM. Further investigation with a larger sample size is recommended. Contribution Novel description of the oral-sensorimotor skills for feeding and the communication development of three severely malnourished toddlers with HIV and tuberculosis co-infection was presented. The complexity of the three cases is highlighted.","PeriodicalId":44003,"journal":{"name":"SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS","volume":" ","pages":"e1-e10"},"PeriodicalIF":1.1,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9634946/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40680359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Harsha Kathard, Prianka Parusnath, Lehana Thabane, Mershen Pillay, Zheng Jing Hu, Jane Le Roux, Michal Harty, Shelley O Carrol, Rizwana B Mallick
{"title":"A survey of communication supports in Grade R classrooms in the Western Cape, South Africa.","authors":"Harsha Kathard, Prianka Parusnath, Lehana Thabane, Mershen Pillay, Zheng Jing Hu, Jane Le Roux, Michal Harty, Shelley O Carrol, Rizwana B Mallick","doi":"10.4102/sajcd.v69i1.871","DOIUrl":"https://doi.org/10.4102/sajcd.v69i1.871","url":null,"abstract":"<p><strong>Background: </strong> Early classroom communication supports are critical in influencing oral language development and emergent literacy skills. It is both support from peers and adults, as well as the environment that impacts the quality and efficacy of language learning. Schools in particular play a key role in communication development, which will be further explored in this article.</p><p><strong>Objectives: </strong> To describe how communication was being supported in the classroom by teachers in the areas of language-learning environment (LLE), language-learning interactions (LLIs) and language-learning opportunities (LLOs) to focus on classroom communication supports to strengthen literacy outcomes for Grade R learners.</p><p><strong>Method: </strong> A cross-sectional descriptive survey of classrooms was conducted using a structured observation method in 136 classrooms. The Communication Supporting Classroom Observation Tool was used to make 223 observations across classrooms of LLE (19 items), LLI (20 items) and LLO (5 items). A descriptive analysis of frequency of occurrence of items was conducted for each domain.</p><p><strong>Results: </strong> Language-learning environment had more frequently occurring observations, with 12 out of 19 items being observed with a frequency of occurrence greater than 65%, indicating that the environment had adequate basic resources (e.g. good light). Language-learning interactions scores indicated that 3 out of 20 items were observed frequently, while 17 out of 20 items were observed less frequently (56.5%), including interactive strategies (e.g. turn-taking). Language Learning Opportunities scores indicated that teacher-led behaviours (e.g. including children in small group activities) were infrequently observed on all items.</p><p><strong>Conclusion: </strong> While the physical environment was generally supportive, the behaviours in the interactive domains of LLI and LLO were observed less frequently. There is potential for speech-language therapists to work collaboratively with teachers to develop communication supporting classrooms as a critical primary-level intervention for language-literacy learning.</p>","PeriodicalId":44003,"journal":{"name":"SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS","volume":" ","pages":"e1-e13"},"PeriodicalIF":1.1,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9634850/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40680358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Urisha Naidoo, Penelope S Flack, Vrinda Rathiram, Legini Moodley, Saira B Karrim, Nomfundo Buthelezi, Vuledzani Ndanganeni
{"title":"Speech-language therapy educator reflections on the planning and implementation of education and training during the COVID-19 pandemic.","authors":"Urisha Naidoo, Penelope S Flack, Vrinda Rathiram, Legini Moodley, Saira B Karrim, Nomfundo Buthelezi, Vuledzani Ndanganeni","doi":"10.4102/sajcd.v69i2.908","DOIUrl":"https://doi.org/10.4102/sajcd.v69i2.908","url":null,"abstract":"<p><strong>Background: </strong> Universities across the world experienced lockdown and closure of all learning institutions around March 2020 because of the advent of the coronavirus disease 2019 (COVID-19). This lockdown and closure presented challenges to the traditional pedagogical approaches in the health sciences, which typically include both campus-based and clinical site-focused activities involving face-to-face interactions and work integrated learning. The onset of the COVID-19 pandemic resulted in a shift to emergency remote teaching (ERT) and learning.</p><p><strong>Objectives: </strong> This study aimed to explore speech-language pathology (SLP) educators' experiences of the planning and implementation of ERT and learning during the COVID-19 pandemic.</p><p><strong>Method: </strong> A qualitative, descriptive narrative design was adopted to meet the objectives of the study. Seven SLP educators from a single university in South Africa participated in this study by constructing narratives on their experiences. The narratives were analysed using thematic analysis.</p><p><strong>Results: </strong> Five themes emerged from the data analysis, and these included (1) uncertainty, (2) educator feelings, (3) capacity development, (4) influence of circumstances on teaching, learning and assessment and (5) troubleshooting. Current findings provide insight into the challenges encountered and strategies utilised by educators in planning and implementing ERT and learning.</p><p><strong>Conclusion: </strong> Beyond the COVID-19 pandemic, most educators believe that a hybrid model would address some concerns identified, such as that of missing face-to-face contact, but that it would still allow for the full exploitation of online activities for teaching, learning and assessment required during clinical training.</p>","PeriodicalId":44003,"journal":{"name":"SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS","volume":" ","pages":"e1-e10"},"PeriodicalIF":1.1,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9557936/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33502807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Audiologists' presbycusis and associated tinnitus counselling practices within the KwaZulu-Natal province.","authors":"Kerusha Bhojraj, Vuyelwa Z Peter","doi":"10.4102/sajcd.v69i1.869","DOIUrl":"https://doi.org/10.4102/sajcd.v69i1.869","url":null,"abstract":"<p><strong>Background: </strong> Counselling plays an integral part in the management of presbycusis and tinnitus. Counselling can be conducted by implementing patient-centred care (PCC), showing improved patient outcomes; however, it has been poorly implemented in healthcare in South Africa (SA), particularly in the field of audiology for this condition.</p><p><strong>Objectives: </strong> This study aimed to report on audiologists' presbycusis and tinnitus counselling practices as guided by the PCC framework within KwaZulu-Natal (KZN).</p><p><strong>Method: </strong> Quantitative semi-structured online surveys were conducted using purposive sampling of 41 audiologists practising in both the public and private sectors within KZN.</p><p><strong>Results: </strong> This study revealed that 7.3% (n = 3) of participants provided only compensation for hearing loss without counselling, and only 2.4% (n = 1) of participants offered group counselling. Apart from this, 7.9% (n = 3) reported that tools and resources in counselling were not useful, whilst 12.5% (n = 5) reported that counselling was not multiculturally sensitive. Furthermore, a p = 0.044 suggests the public sector reported a dire need for improved training in counselling as compared with the private sector.</p><p><strong>Conclusion: </strong> Audiologists have been providing services within PCC to the best of their capabilities and their environments; however, there is still room to better implement PCC for improved patient outcomes. PCC has not been fully implemented into counselling practices in terms of patient preferences, emotional support, involvement of significant others, integrated care and education.</p>","PeriodicalId":44003,"journal":{"name":"SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS","volume":" ","pages":"e1-e11"},"PeriodicalIF":1.1,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9559114/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33503202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}