{"title":"Perceptions of Visiting Oral Health Service Providers: Using the Q Method and Focusing on Suggestions for the Role of Dental Hygienists in a Community.","authors":"Sue-Hyang Lee, Soo-Myoung Bae, Bo-Mi Shin, Sun-Jung Shin","doi":"10.1111/ger.12824","DOIUrl":"https://doi.org/10.1111/ger.12824","url":null,"abstract":"<p><strong>Objective: </strong>This study aimed to identify the types and characteristics of providers' (dental hygienists and caregivers) perceptions of visiting oral health care services and explore the contents of visiting oral health care services and the social role of dental hygienists in promoting the health of older adults in the upcoming post-aged society.</p><p><strong>Methods: </strong>This study was conducted using the Q method. The Q sample utilised the same 32 statements selected by Lee et al. (2021), who analysed the perceptions of Korean older adults on home-visiting oral health care services. The P sample was randomly selected and included 16 dental hygienists and 16 caregivers who provide oral hygiene care for older adults in the community. The 32 participants were asked to rank the statements in the Q-set based on their level of agreement. The Q-sorted data were analysed using the PC-QUANL programme.</p><p><strong>Results: </strong>A four-factor structure with five factor types was identified, explaining 50.9% of the variance. Analysis of provider perception types revealed differences regarding who should deliver oral health care to older adults-dental teams including dentists and hygienists or hygienists alone-and in service content and focus. However, most providers agreed that dental hygienists should accurately assess older adults' oral health needs and deliver appropriate care.</p><p><strong>Conclusion: </strong>To promote the health of older adults in the future, dental hygienists should be recognised as essential providers in community-based care systems and supported by national policy to deliver accessible, collaborative and preventive services.</p>","PeriodicalId":12583,"journal":{"name":"Gerodontology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144142281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GerodontologyPub Date : 2025-05-19DOI: 10.1111/ger.12821
Aziza Sallam, Noleen K McCorry, Michelle Harvey, Anja Heilmann, Caroline Lappin, Clare McEvoy, Gary Mitchell, Sinead Watson, Ciaran O'Neill, George Tsakos, Jayne Woodside, Paul Brocklehurst, Kerry B D Campbell, Gerry McKenna
{"title":"The Impact of Dietary Intake and Nutritional Status on the Oral Health of Older Adults Living in Care Homes: A Scoping Review.","authors":"Aziza Sallam, Noleen K McCorry, Michelle Harvey, Anja Heilmann, Caroline Lappin, Clare McEvoy, Gary Mitchell, Sinead Watson, Ciaran O'Neill, George Tsakos, Jayne Woodside, Paul Brocklehurst, Kerry B D Campbell, Gerry McKenna","doi":"10.1111/ger.12821","DOIUrl":"https://doi.org/10.1111/ger.12821","url":null,"abstract":"<p><strong>Objectives: </strong>To review the literature on the relationship between oral health, dietary intake, and nutritional status in older adults in care homes, identifying research gaps.</p><p><strong>Background: </strong>Many older adults in care homes retain natural teeth but face oral health issues due to challenges in maintaining hygiene and limited dental care access. While the provided diet aims to prevent frailty, it may contain high levels of sugars and fermentable carbohydrates, which can contribute to oral health issues such as dental caries and periodontal disease.</p><p><strong>Methods: </strong>A scoping review was conducted following PRISMA-ScR guidelines. MEDLINE, CINAHL, Web of Science, and EMBASE were searched to answer, \"What is known about the relationship between dietary intake, nutritional status and oral health in older adults in care homes?.\"</p><p><strong>Results: </strong>Forty-nine studies (1989-2024) addressed this relationship, with most studies being cross-sectional (n = 43), including two qualitative and one mixed-method study; six were longitudinal, including one interventional. Findings highlighted the negative impact of oral health problems-xerostomia, dysphagia, and chewing issues-on dietary intake and nutritional status, while interventions like denture provision and professional tooth brushing had positive effects. Longitudinal studies emphasised the harm of sugar intake on oral health, with additional factors like dementia, resident dependency, and staffing issues adversely affecting both oral health and nutrition.</p><p><strong>Conclusions: </strong>This review highlights the complex relationship between oral health, diet, and nutrition in care homes, emphasising gaps in research on the impact of dietary intake, particularly sugar consumption, on oral health, as well as limitations in study designs.</p>","PeriodicalId":12583,"journal":{"name":"Gerodontology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144093419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GerodontologyPub Date : 2025-05-03DOI: 10.1111/ger.12822
Merel C Verhoeff, Karina E Pigeaud, Danisha M Tholen, Miranda Rezk, Frank Lobbezoo
{"title":"Oral Health and Dental Health Care Experiences of Patients From the Netherlands With Parkinson's Disease: A Qualitative Study.","authors":"Merel C Verhoeff, Karina E Pigeaud, Danisha M Tholen, Miranda Rezk, Frank Lobbezoo","doi":"10.1111/ger.12822","DOIUrl":"https://doi.org/10.1111/ger.12822","url":null,"abstract":"<p><strong>Background: </strong>Parkinson's disease patients have poorer oral health than their healthy peers. Insight into their own experiences is vital for improving dental care.</p><p><strong>Objective: </strong>To better understand the experiences of Parkinson's disease patients' with their oral health and dental care.</p><p><strong>Materials and methods: </strong>Eleven semistructured interviews with Parkinson's disease patients from the Netherlands were conducted. Data were analysed using thematic analysis to identify recurring themes and patterns.</p><p><strong>Results: </strong>Participants' narratives revealed challenges in accessing dental treatment, primarily due to motor and communication difficulties. They also highlighted organisational barriers, such as appointment scheduling and awareness of care practitioners about Parkinson's disease patients' oral health. Furthermore, they expressed the urgent need for Parkinson's disease-specific dental education to (dental) care practitioners and research initiatives that focus on Parkinson's disease patients' oral health and dental care.</p><p><strong>Conclusion: </strong>Parkinson's disease patients' experiences highlight the need for tailored care interventions and improvements in dental care systems.</p>","PeriodicalId":12583,"journal":{"name":"Gerodontology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143966801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GerodontologyPub Date : 2025-05-03DOI: 10.1111/ger.12823
Ji-Yeon Lim, Ju-Mi Lee, Hae-Sung Nam
{"title":"Effect of Regional Deprivation and Dental Care Resources on the Unmet Dental Care Needs due to Cost of Older Individuals in South Korea.","authors":"Ji-Yeon Lim, Ju-Mi Lee, Hae-Sung Nam","doi":"10.1111/ger.12823","DOIUrl":"https://doi.org/10.1111/ger.12823","url":null,"abstract":"<p><strong>Objectives: </strong>To provide policy-relevant evidence to reduce oral health disparities and improve dental care accessibility by considering characteristics of urban and rural areas.</p><p><strong>Background: </strong>Individual and regional factors influence dental care access. Regional poverty and limited dental resources among older adults may contribute to unmet dental care needs due to cost.</p><p><strong>Materials and methods: </strong>A multilevel logistic regression analysis was conducted to examine the association between regional factors (regional deprivation, number of dentists per 10,000 and number of dental offices per 100,000) and unmet dental care needs due to cost. The analysis was adjusted for individual factors, such as sex, education, marital status, household income, subjective health status, chewing difficulty and limited daily activities, as determined by the 2021 Korean Community Health Survey (KCHS; n = 47,802).</p><p><strong>Results: </strong>The prevalence of unmet dental care needs due to cost was 4.94% in urban and 4.80% in rural older adults. Individuals who lived in higher regional deprivation (poorer regions) were less likely to experience unmet dental care needs due to cost (OR = 0.66, 95% CI = 0.47-0.94) only in rural areas. Individuals residing in areas with a higher number of dentists per 10,000 were more likely to experience unmet dental care needs due to cost in urban (OR = 2.19, 95% CI = 1.01-4.73) and rural (OR = 1.97; 95% CI = 1.16-3.34). Household income and oral health status were the strongest predictors of unmet dental care needs due to cost.</p><p><strong>Conclusions: </strong>The influence of regional poverty, dentist distribution and individual factors should be considered in developing policies to reduce the unmet dental care needs of older Koreans.</p>","PeriodicalId":12583,"journal":{"name":"Gerodontology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143981083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dietary n-6 and n-3 Polyunsaturated Fatty Acids and Tooth Loss in Community-Dwelling Older Japanese People.","authors":"Akihiro Yoshihara, Masanori Iwasaki, Kana Suwama, Ayuko Odajima, Keiko Kabasawa, Yumi Ito, Junta Tanaka","doi":"10.1111/ger.12819","DOIUrl":"https://doi.org/10.1111/ger.12819","url":null,"abstract":"<p><strong>Objective: </strong>This study investigated the associations between baseline n-6 and n-3 polyunsaturated fatty acid levels and the number of teeth lost subsequently over 5 years.</p><p><strong>Background: </strong>The relationship between n-3 and n-6 polyunsaturated fatty acids and tooth loss remains unclear. Previous studies have been limited to older individuals aged 70 and above, and no research has been conducted that takes into account a broader age range.</p><p><strong>Material and methods: </strong>Participants (n = 1534) attended both the baseline survey and the follow-up survey conducted 5 years later. Poisson regression analyses were conducted after converting the number of teeth present at baseline into an adjustment variable. The dependent variable was the number of lost teeth over a five-year period. The exposure variables were each quintile of self-reported n-3 and n-6 polyunsaturated fatty acid intake levels (g/1000 kcal) and the ratio of self-reported n-6 to n-3 polyunsaturated fatty acid intake levels (n-6:n-3 ratio) adjusted by age, sex, smoking, use of dental floss or interdental brush and history of diabetes mellitus.</p><p><strong>Results: </strong>Higher n-3 fatty acid intake (5th quintile, incidence rate ratio (IRR): 0.21, p < 0.001) and a lower dietary n-6:n-3 ratio (≤ 4.0) significantly lower tooth loss risk. Conversely, higher n-6 intake (5th quintile, IRR: 1.32, p = 0.006) was associated with the likelihood of tooth loss. Younger age, flossing and adequate chewing ability were associated with better dental outcomes.</p><p><strong>Conclusion: </strong>Balanced dietary intake, particularly higher n-3 fatty acids and a lower n-6:n-3 ratio, helps preserve dental health by reducing tooth loss risk.</p>","PeriodicalId":12583,"journal":{"name":"Gerodontology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143779753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Subjectively Low Oral Function Is Associated With Physical Frailty and Polypharmacy in Community-Dwelling Older Adults.","authors":"Aya Hirata, Masahiro Ishizaka, Akihiro Yakabi, Kaoru Kobayashi, Akihiro Ito, Tsuyoshi Hara, Tomohiko Urano","doi":"10.1111/ger.12818","DOIUrl":"https://doi.org/10.1111/ger.12818","url":null,"abstract":"<p><strong>Objective: </strong>To examine each Kihon Checklist (KCL) oral function item, physical function, and the number of medications and describe associations between KCL oral function, frailty, sarcopenia, and polypharmacy.</p><p><strong>Methods: </strong>Participants were 318 community-dwelling older adults (78.6 ± 6.9 years). The number of medications, KCL, the Japanese version of the Cardiovascular Health Study (J-CHS), grip strength, gait speed, and skeletal muscle index were measured. Analyses used cross-tabulation. Logistic regression modelled the presence of low oral function.</p><p><strong>Results: </strong>Of the three oral function questions on the KCL, 34.9% of participants answered \"yes\" to Q13 on mastication, 24.8% answered \"yes\" to Q14 on swallowing, and 31.4% answered \"yes\" to Q15 on dry mouth. A total of 25.2% of the participants had low oral function according to the KCL. More of those with low oral function had polypharmacy. Oral function was not associated with sarcopenia. Physical frailty was associated with low oral function. Logistic regression analysis with oral function as the dependent variable and age, sex, polypharmacy, physical frailty, and sarcopenia status as the independent variables showed that physical frailty was associated with it.</p><p><strong>Conclusion: </strong>Older people who are physically frail and taking multiple medications are likely also to have oral frailty.</p>","PeriodicalId":12583,"journal":{"name":"Gerodontology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143752197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GerodontologyPub Date : 2025-03-31DOI: 10.1111/ger.12813
Logan D Davari, Martin Morris, Paul J Allison
{"title":"Policy Options to Complement the New Canadian Dental Program Enabling High Quality Care for People With Disabilities and Older Adults.","authors":"Logan D Davari, Martin Morris, Paul J Allison","doi":"10.1111/ger.12813","DOIUrl":"https://doi.org/10.1111/ger.12813","url":null,"abstract":"<p><strong>Background: </strong>The newly announced Canadian Dental Care Plan (CDCP) particularly aims to reduce financial barriers to dental care for individuals living below a family income threshold. The Canadian government has also launched an \"Oral Health Access Fund\" to support projects aiming to address financial barriers to dental care for older adults, those with disabilities and other groups. Evidence from programs implemented elsewhere in the world could inform policy decisions and address such non-financial barriers for older Canadians and those with disabilities.</p><p><strong>Aim: </strong>To identify dental programs and policies in OECD countries focusing on people with disabilities and older people, and to outline how they might be applied to the Canadian context.</p><p><strong>Methods: </strong>The strategy for this narrative literature review comprised a combination of Medical Subject Headings (MeSh) or their equivalent, title/abstract keywords, truncations, and Boolean operators. Medline (Ovid), Embase (Ovid), CINAHL and Scopus were used. The searches were limited to English language publications involving programs and policies in all OECD countries. All searches ran from inception to January 25, 2023, with no restrictions on publication time.</p><p><strong>Results: </strong>The search identified 129 articles eligible for review. Findings were categorized as (1) interventions at the institutional-level (subdivided into patient-, professional- and community-focused programs) and (2) interventions at the governmental-level (subdivided into universal, population-specific, and community-based programs). Evidence suggests that targeted, integrated coaching or education programs for oral health care are beneficial, especially when programs are constantly evaluated and improved. Programs with a unified network system that integrates various relevant organizational and health domains have demonstrated to be most effective in the improvement of oral health care and overall health. Dental and medical healthcare workers play a crucial role in improving oral health outcomes and need motivation and fair compensation when caring for older people.</p><p><strong>Conclusions: </strong>There is limited quality evidence supporting approaches to improving oral health care and oral health for older people and those with disabilities. It is important for policymakers and stakeholders to consider programmes from other countries when expanding the CDCP.</p>","PeriodicalId":12583,"journal":{"name":"Gerodontology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143752119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GerodontologyPub Date : 2025-03-31DOI: 10.1111/ger.12817
Basel Kharbot, Maike Riegel, Falk Schwendicke, Sebastian Paris, Gerd Göstemeyer
{"title":"Accuracy and Reliability of Intraoral 3D Scans for Diagnostic Evaluations in Nursing Home Residents.","authors":"Basel Kharbot, Maike Riegel, Falk Schwendicke, Sebastian Paris, Gerd Göstemeyer","doi":"10.1111/ger.12817","DOIUrl":"https://doi.org/10.1111/ger.12817","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate the accuracy and reliability of intraoral 3D scans for assessing the oral health of older patients living in nursing homes.</p><p><strong>Materials and methods: </strong>One examiner recorded missing teeth, restorations, caries lesions and oral hygiene (Geriatric-Debris-Index Simplified [GDI-S] ≥ 1.9) in nursing home residents using visual-tactile diagnostics (reference test) and afterwards obtained intraoral scans with an intraoral scanner (TRIOS 4, 3Shape). Two other independent investigators and the clinical examiner assessed only the scans to delineate the same diagnostic outcomes. For these outcomes, we assessed accuracy, sensitivity, specificity and the Area-under-the-Receiver-Operating-Characteristics Curve (AUROC). Kappa values (κ) were calculated to evaluate inter-examiner and intra-examiner reliability after re-examination by all examiners after a minimum interval of 3 weeks.</p><p><strong>Results: </strong>Forty-three partially dentate patients (65-95 years of age) in need of care living in four nursing homes with a total of 486 teeth (mean [SD]: 11 [9] teeth per patient) were examined. Scans were perfectly accurate for detecting missing teeth (AUROC [sensitivity/specificity]: 1 [1/1]) and showed high accuracy for detecting restorations (0.96 [0.93/0.98]), too. Accuracy was lower to detect caries (0.77 [0.58/0.97]) and insufficient for oral hygiene (0.76 [0.54/0.99]). Agreement between examiners was perfect for missing teeth (κ: 1), very good for the detection of restorations (0.94), and good for caries or insufficient oral hygiene (0.73 and 0.72, respectively).</p><p><strong>Conclusions: </strong>Scans were suitable for basic diagnostic evaluations but showed considerable shortcomings in detecting caries and poor oral hygiene. Assessing scans was relatively reliable.</p><p><strong>Clinical relevance: </strong>Using scans may allow telemedical assessments of nursing home residents, but users should be aware of the differential accuracy for different diagnostic targets.</p>","PeriodicalId":12583,"journal":{"name":"Gerodontology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143752105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GerodontologyPub Date : 2025-03-25DOI: 10.1111/ger.12814
Salmi Annina, Nykänen Irma, Välimäki Tarja, Koponen Sohvi, Savela Roosa-Maria, Schwab Ursula, Suominen Anna Liisa
{"title":"The Effect of an Individually Tailored Oral Health Intervention on Dental Plaque and Caries Among Family Caregivers and Their Care Recipients.","authors":"Salmi Annina, Nykänen Irma, Välimäki Tarja, Koponen Sohvi, Savela Roosa-Maria, Schwab Ursula, Suominen Anna Liisa","doi":"10.1111/ger.12814","DOIUrl":"https://doi.org/10.1111/ger.12814","url":null,"abstract":"<p><strong>Objective: </strong>This study aimed to evaluate the effect of an individually tailored oral health intervention on the oral hygiene and health of family caregivers and their care recipients aged 60 years and older.</p><p><strong>Background: </strong>Older adults are retaining their natural teeth longer. The compromised condition of teeth and oral health increases the risk of the deterioration of functional ability. Focused early intervention plays a significant role in preventing oral health problems in the future.</p><p><strong>Materials and methods: </strong>This study was a six-months intervention study with a six-month follow-up and was part of the LENTO (Lifestyle, Nutrition and Oral health of caregivers) study. The sample consisted of family caregivers and their care recipients living in Eastern Finland. At baseline, the total sample comprised 239 (124 family caregivers and 115 care recipients) who were randomly allocated to either an intervention or a control group. In the intervention group, family caregivers received a tailored oral health intervention.</p><p><strong>Results: </strong>The number of teeth with plaque decreased among family caregivers (β = -2.1, CI -4.0-(-1.2), p = 0.015) and their care recipients (β = -0.6, CI -0.0-(-2.1), p = 0.050). The number of teeth with caries decreased among family caregivers who participated in the intervention (β = -0.6, CI -1.1-(-0.1), p = 0.015), but not among their care recipients.</p><p><strong>Conclusion: </strong>Our study shows that tailored information effectively promotes oral cleanliness among older adults. Furthermore, the number of teeth with caries decreased among family caregivers. It can therefore be recommended that such information and education on oral hygiene be implemented in healthcare systems in general. Furthermore, an interprofessional approach is necessary to promote better oral health in this vulnerable group of older adults.</p><p><strong>Trial registration: </strong>ClinicalTrials.gov NCT04003493. Registered on June 28, 2019.</p>","PeriodicalId":12583,"journal":{"name":"Gerodontology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143700261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}