Arthritis and rheumatism最新文献

{"title":"Identification of undiagnosed inflammatory arthritis in a community health fair screen.","authors":"Kevin D Deane,&nbsp;Christopher C Striebich,&nbsp;Barbara L Goldstein,&nbsp;Lezlie A Derber,&nbsp;Mark C Parish,&nbsp;Marie L Feser,&nbsp;Elaine M Hamburger,&nbsp;Stacey Brake,&nbsp;Cindy Belz,&nbsp;James Goddard,&nbsp;Jill M Norris,&nbsp;Elizabeth W Karlson,&nbsp;V Michael Holers","doi":"10.1002/art.24834","DOIUrl":"https://doi.org/10.1002/art.24834","url":null,"abstract":"<p><strong>Objective: </strong>To identify individuals with undiagnosed inflammatory arthritis (IA) and rheumatoid arthritis (RA) in a community health fair screen, and to establish in a health fair setting the diagnostic accuracy of combinations of the Connective Tissue Disease Screening Questionnaire (CSQ) and autoantibody testing for IA.</p><p><strong>Methods: </strong>Screening for IA/RA was performed at health fair sites using a combination of the CSQ, joint examination, rheumatoid factor, and anti-cyclic citrullinated peptide (anti-CCP) antibody testing. IA was defined as > or =1 swollen joint suggestive of synovitis on joint examination by a trained clinician.</p><p><strong>Results: </strong>Six hundred one subjects were screened; 51.0% participated because of joint symptoms (pain, stiffness, or swelling). Eighty-four subjects (14.0%) had > or =1 swollen joint, designated as IA on joint examination. Of the 601 subjects screened, 9 (1.5%) had IA and met > or =4 of 7 American College of Rheumatology criteria for RA but had no prior diagnosis of RA, and 15 (2.5%) had IA and RF and/or anti-CCP positivity, suggesting early RA. The diagnostic accuracy of combinations of the CSQ and autoantibody testing for the identification of IA yielded maximal sensitivity, specificity, and positive and negative predictive values of 95.3%, 99.2%, 71.4%, and 97.7%, respectively.</p><p><strong>Conclusion: </strong>Health fair screening may be an effective approach for the identification of individuals with undiagnosed IA/RA. A combination of the CSQ and autoantibody testing alone has clinically useful diagnostic accuracy for the detection of IA. Decisions regarding which methodology to use for future health fair IA/RA screening will depend on goals of screening and funding.</p>","PeriodicalId":8405,"journal":{"name":"Arthritis and rheumatism","volume":"61 12","pages":"1642-9"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/art.24834","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28539018","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":"Each measure of patient-reported change provides useful information and is susceptible to bias: the need to combine methods to assess their relative validity.","authors":"Pythia T Nieuwkerk,&nbsp;Mirjam A G Sprangers","doi":"10.1002/art.25030","DOIUrl":"https://doi.org/10.1002/art.25030","url":null,"abstract":"","PeriodicalId":8405,"journal":{"name":"Arthritis and rheumatism","volume":"61 12","pages":"1623-5"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/art.25030","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28539020","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":"Neurologic outcome of surgical and conservative treatment of rheumatoid cervical spine subluxation: a systematic review.","authors":"Jasper F C Wolfs,&nbsp;Margreet Kloppenburg,&nbsp;Michael G Fehlings,&nbsp;Maurits W van Tulder,&nbsp;Maarten Boers,&nbsp;Wilco C Peul","doi":"10.1002/art.25011","DOIUrl":"https://doi.org/10.1002/art.25011","url":null,"abstract":"<p><strong>Objective: </strong>Rheumatoid arthritis commonly involves the upper cervical spine and can cause significant neurologic morbidity and mortality. However, there is no consensus on the optimal timing for surgical intervention: whether surgery should be performed prophylactically or once neurologic deficits have become apparent.</p><p><strong>Methods: </strong>A systematic review of the literature was performed to analyze neurologic outcome (Ranawat) and survival time (Kaplan-Meier) after surgical or conservative treatment using the MOOSE (Meta-analysis Of Observational Studies in Epidemiology) and GRADE (Grading of Recommendations, Assessment, Development and Evaluation system) criteria.</p><p><strong>Results: </strong>Twenty-five observational studies were selected. No randomized controlled trials (RCTs) could be found. All of the studies had a high risk of bias. Twenty-three studies reported the neurologic outcome after surgery for 752 patients. Neurologic deterioration rarely occurred in Ranawat I and II patients. Ranawat III patients did not fully recover. The 10-year survival rates were 77%, 63%, 47%, and 30% for Ranawat I, II, IIIA, and IIIB, respectively. The Ranawat IIIB patients had a significantly worse outcome. Another 185 patients treated conservatively were described in 7 studies. Neurologic deterioration rarely occurred in Ranawat I patients, but was almost inevitable in Ranawat II, IIIA, and IIIB patients. The Kaplan-Meier analysis showed a 10-year overall survival rate of 40%.</p><p><strong>Conclusion: </strong>There are no RCTs that compared surgery with conservative treatment. In observational studies, surgical neurologic outcomes were better than conservative treatment in all patients with cervical spine involvement, and in asymptomatic patients with no neurologic impairment (Ranawat I) the outcomes were similar; however, the evidence is weak. Survival time of surgical and conservative treatment could not be compared.</p>","PeriodicalId":8405,"journal":{"name":"Arthritis and rheumatism","volume":"61 12","pages":"1743-52"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/art.25011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28539969","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":"Effects of high-intensity resistance training in patients with rheumatoid arthritis: a randomized controlled trial.","authors":"Andrew B Lemmey,&nbsp;Samuele M Marcora,&nbsp;Kathryn Chester,&nbsp;Sally Wilson,&nbsp;Francesco Casanova,&nbsp;Peter J Maddison","doi":"10.1002/art.24891","DOIUrl":"https://doi.org/10.1002/art.24891","url":null,"abstract":"<p><strong>Objective: </strong>To confirm, in a randomized controlled trial (RCT), the efficacy of high-intensity progressive resistance training (PRT) in restoring muscle mass and function in patients with rheumatoid arthritis (RA). Additionally, to investigate the role of the insulin-like growth factor (IGF) system in exercise-induced muscle hypertrophy in the context of RA.</p><p><strong>Methods: </strong>Twenty-eight patients with established, controlled RA were randomized to either 24 weeks of twice-weekly PRT (n = 13) or a range of movement home exercise control group (n = 15). Dual x-ray absorptiometry-assessed body composition (including lean body mass [LBM], appendicular lean mass [ALM], and fat mass); objective physical function; disease activity; and muscle IGFs were assessed at weeks 0 and 24.</p><p><strong>Results: </strong>Analyses of variance revealed that PRT increased LBM and ALM (P < 0.01); reduced trunk fat mass by 2.5 kg (not significant); and improved training-specific strength by 119%, chair stands by 30%, knee extensor strength by 25%, arm curls by 23%, and walk time by 17% (for objective function tests, P values ranged from 0.027 to 0.001 versus controls). In contrast, body composition and physical function remained unchanged in control patients. Changes in LBM and regional lean mass were associated with changes in objective function (P values ranged from 0.126 to <0.0001). Coinciding with muscle hypertrophy, previously diminished muscle levels of IGF-1 and IGF binding protein 3 both increased following PRT (P < 0.05).</p><p><strong>Conclusion: </strong>In an RCT, 24 weeks of PRT proved safe and effective in restoring lean mass and function in patients with RA. Muscle hypertrophy coincided with significant elevations of attenuated muscle IGF levels, revealing a possible contributory mechanism for rheumatoid cachexia. PRT should feature in disease management.</p>","PeriodicalId":8405,"journal":{"name":"Arthritis and rheumatism","volume":"61 12","pages":"1726-34"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/art.24891","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28539971","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":"Ambulatory visit utilization in a national, population-based sample of adults with osteoarthritis.","authors":"Miriam G Cisternas, Edward Yelin, Jeffrey N Katz, Daniel H Solomon, Elizabeth A Wright, Elena Losina","doi":"10.1002/art.24897","DOIUrl":"10.1002/art.24897","url":null,"abstract":"<p><strong>Objective: </strong>To estimate the proportion of adults with osteoarthritis (OA) seeing various medical providers and ascertain factors affecting the likelihood of a patient seeing an OA specialist.</p><p><strong>Methods: </strong>We used data from the Medical Expenditures Panel Survey, a stratified random sample of the noninstitutionalized civilian population. We classified adults as having symptomatic OA if their medical conditions included at least 1 occurrence of the International Classification of Diseases, Ninth Revision Clinical Modification, codes 715, 716, or 719, and if they reported joint pain, swelling, or stiffness during the previous 12 months. For the purpose of our analysis, we defined rheumatologists, orthopedists, and physical therapists as OA specialists. We first estimated the proportion of OA individuals seen by OA specialists and other health care providers in a 1-year period. We then used logistic regression to estimate the impact of demographic and clinical factors on the likelihood of an individual seeing an OA specialist.</p><p><strong>Results: </strong>A total of 9,933 persons met the definition of OA, representing 22.5 million adults in the US. Of these persons, 92% see physicians during the year, 34% see at least 1 OA specialist, 25% see an orthopedist, 11% see a physical therapist, and 6% see a rheumatologist. Higher educational attainment, having more comorbidities, and residing in the northeastern US are significant positive predictors for a patient seeing an OA specialist. Significant negative predictors for seeing an OA specialist are being unmarried but previously married and having no health insurance.</p><p><strong>Conclusion: </strong>Most adults with OA do not visit OA specialists. Those without insurance and with lower levels of education are less likely to see these specialists.</p>","PeriodicalId":8405,"journal":{"name":"Arthritis and rheumatism","volume":"61 12","pages":"1694-703"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2836231/pdf/nihms178425.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28539021","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":"The New York City Rheumatology Objective Structured Clinical Examination: five-year data demonstrates its validity, usefulness as a unique rating tool, objectivity, and sensitivity to change.","authors":"Jessica R Berman,&nbsp;Deana Lazaro,&nbsp;Theodore Fields,&nbsp;Anne R Bass,&nbsp;Elena Weinstein,&nbsp;Chaim Putterman,&nbsp;Edward Dwyer,&nbsp;Svetlana Krasnokutsky,&nbsp;Stephen A Paget,&nbsp;Michael H Pillinger","doi":"10.1002/art.24738","DOIUrl":"https://doi.org/10.1002/art.24738","url":null,"abstract":"<p><strong>Objective: </strong>Traditional means of testing rheumatology fellows do not adequately assess some skills that are required to practice medicine well, such as humanistic qualities, communication skills, or professionalism. Institution of the New York City Rheumatology Objective Structured Clinical Examination (ROSCE) and our sequential 5 years of experience have provided us with a unique opportunity to assess its usefulness and objectivity as a rheumatology assessment tool.</p><p><strong>Methods: </strong>Prior to taking the examination, all of the fellows were rated by their program directors. Fellows from the participating institutions then underwent a multistation patient-interactive examination observed and rated by patient actors and faculty raters. Assessments were recorded by all of the participants using separate but overlapping sets of instruments testing the Accreditation Council of Graduate Medical Education (ACGME) core competencies of patient care, interpersonal and communication skills, professionalism, and overall medical knowledge.</p><p><strong>Results: </strong>Although the program directors tended to rate their fellows more highly than the ROSCE raters, typically there was agreement between the program directors and the ROSCE faculty in distinguishing between the highest- and lowest- performing fellows. The ROSCE faculty and patient actor assessments of individual trainees were notable for a high degree of concordance, both quantitatively and qualitatively.</p><p><strong>Conclusion: </strong>The ROSCE provides a unique opportunity to obtain a patient-centered assessment of fellows' ACGME-mandated competencies that traditional knowledge-based examinations, such as the rheumatology in-service examination, cannot measure. The ability of the ROSCE to provide a well-rounded and objective assessment suggests that it should be considered an important component of the rheumatology training director's toolbox.</p>","PeriodicalId":8405,"journal":{"name":"Arthritis and rheumatism","volume":"61 12","pages":"1686-93"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/art.24738","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28539079","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 patient's perspective on multidisciplinary treatment gain for fibromyalgia: an indicator for pre-post treatment effects?","authors":"Saskia van Koulil,&nbsp;Floris W Kraaimaat,&nbsp;Wim van Lankveld,&nbsp;Piet L C M van Riel,&nbsp;Andrea W M Evers","doi":"10.1002/art.24792","DOIUrl":"https://doi.org/10.1002/art.24792","url":null,"abstract":"<p><strong>Objective: </strong>Increasing attention is devoted to the patient's perspective in clinical research and practice. However, the relationship between the patient's view on treatment progress and standardized pre-post changes in health outcomes is not well understood. The objective of this study was to investigate whether the patient's perception of treatment gain converges with pre-post treatment effects of a multidisciplinary treatment as assessed by standardized self-report measures.</p><p><strong>Methods: </strong>During a tailored multidisciplinary treatment for fibromyalgia, validated self-report questionnaires were assessed at baseline and posttreatment on the outcome measures of pain, functional disability, fatigue, anxiety, and negative mood. In addition, the participants were asked to fill in a questionnaire at the end of the treatment assessing the patient's perception of improvement on core outcomes, as well as satisfaction and usefulness of the treatment.</p><p><strong>Results: </strong>Moderate to relatively high correlations were found between the patient's perception of improvement and pre-post changes on the physical outcomes, in contrast to small or nonsignificant correlations for psychological outcomes. In addition, satisfaction and usefulness were significantly related to pre-post changes on physical outcomes, but no relationship was found with respect to psychological outcomes.</p><p><strong>Conclusion: </strong>Results suggest that the patient's perception of treatment gain and pre-post changes in outcomes during treatment assess different aspects of the patient's treatment progress, particularly with regard to psychological functioning. Future research on clinical improvements should consider the patient's perception of treatment gain as an independent and clinically relevant outcome, in addition to standardized trial data of pre-post assessments of health outcomes.</p>","PeriodicalId":8405,"journal":{"name":"Arthritis and rheumatism","volume":"61 12","pages":"1626-32"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/art.24792","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28539080","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":"Modeling the need for hip and knee replacement surgery. Part 1. A two-stage cross-cohort approach.","authors":"Andy Judge,&nbsp;Nicky J Welton,&nbsp;Jat Sandhu,&nbsp;Yoav Ben-Shlomo","doi":"10.1002/art.24892","DOIUrl":"https://doi.org/10.1002/art.24892","url":null,"abstract":"<p><strong>Objective: </strong>To explore inequalities in the need for hip/knee replacement surgery using a 2-stage cross-cohort approach.</p><p><strong>Methods: </strong>In the first stage, a small-area population-based survey, the Somerset and Avon Survey of Health, was used to provide a high-quality measure of need for hip/knee replacement using the New Zealand (NZ) score. Receiver operating characteristic curve analyses were used to validate a simplified NZ score, excluding information from clinical examination. In the second stage, a nationally representative population-based survey, the English Longitudinal Study of Ageing, was used to explore inequalities in need for hip/knee replacement using the simplified NZ score. Multilevel Poisson regression modeling was used to estimate rates of need for surgery. Exposures considered were age, sex, social class, ethnicity, obesity, Index of Multiple Deprivation 2004 deprivation quintiles, rurality, and ethnic mix of area.</p><p><strong>Results: </strong>Rates of need for hip/knee replacement increase with age and are lower in men than in women (rate ratio [RR] 0.7, 95% confidence interval [95% CI] 0.6-0.9 for hips; RR 0.8, 95% CI 0.7-1.0 for knees). Those of lowest social class have greater need. Need was greatest for people living in more deprived areas. Individual ethnic group did not predict the need for surgery. For hip replacement, there was no rurality effect; for knee replacement, those in town and fringe areas had greater need. Obesity was a strong predictor of need for surgery (RR 2.3, 95% CI 1.9-2.8 for hips; RR 2.4, 95% CI 2.0-2.8 for knees).</p><p><strong>Conclusion: </strong>This study provides evidence of greater variations of inequalities in need for hip/knee replacement than previous studies. Further research should explore geographic variation and produce small-area estimates of need to inform local health planning. It is important to complement data on need with willingness to undergo surgery.</p>","PeriodicalId":8405,"journal":{"name":"Arthritis and rheumatism","volume":"61 12","pages":"1657-66"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/art.24892","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28539973","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":"US bone and joint decade prepares for the future.","authors":"Joshua J Jacobs,&nbsp;Toby King","doi":"10.1002/art.24974","DOIUrl":"https://doi.org/10.1002/art.24974","url":null,"abstract":"","PeriodicalId":8405,"journal":{"name":"Arthritis and rheumatism","volume":"61 11","pages":"1470-1"},"PeriodicalIF":0.0,"publicationDate":"2009-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/art.24974","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28101623","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":"Improved influenza and pneumococcal vaccination in rheumatology patients taking immunosuppressants using an electronic health record best practice alert.","authors":"Lindsay J Ledwich,&nbsp;Thomas M Harrington,&nbsp;William T Ayoub,&nbsp;Jennifer A Sartorius,&nbsp;Eric D Newman","doi":"10.1002/art.24873","DOIUrl":"https://doi.org/10.1002/art.24873","url":null,"abstract":"<p><strong>Objective: </strong>To examine whether an electronic health record (EHR) best practice alert (BPA), a clinical reminder to help guideline adherence, improved vaccination rates in rheumatology patients receiving immunosuppressants. Guidelines recommend yearly influenza and pneumococcal vaccination with revaccination for patients age >65 years who are taking immunosuppressive medications.</p><p><strong>Methods: </strong>A vaccination BPA was developed based on immunosuppressant treatment, age, and prior vaccinations. At site 1, a hospital-based academic practice, physicians ordered vaccinations. At site 2, a community-based practice, physicians signed orders placed by nurses. Demographics, vaccination rates, and documentation (vaccination or no administration) were obtained. Chi-square and Fisher's exact test analysis compared vaccination and documentation rates for October 1 through December 31, 2006 (preBPA), and October 1 through December 31, 2007 (postBPA). Breslow-Day statistics tested the odds ratio of improvement across the years between the sites.</p><p><strong>Results: </strong>PostBPA influenza vaccination rates significantly increased (47% to 65%; P < 0.001), with significant improvement at both sites. PostBPA pneumococcal vaccination rates likewise significantly increased (19% to 41%; P < 0.001). PostBPA documentation rates for influenza and pneumococcal vaccinations also increased significantly. Site 2 (nurse-driven) had significantly higher preBPA vaccination rates for influenza (69% versus 43%; P < 0.001) than pneumococcal (47% versus 15%; P < 0.001).</p><p><strong>Conclusion: </strong>The use of a BPA significantly increased influenza and pneumococcal vaccination and documentation rates in rheumatology patients taking immunosuppressants. A nurse-driven process offered higher efficacy. An EHR programmed to alert providers is an effective tool for improving quality of care for patients receiving immunosuppressants.</p>","PeriodicalId":8405,"journal":{"name":"Arthritis and rheumatism","volume":"61 11","pages":"1505-10"},"PeriodicalIF":0.0,"publicationDate":"2009-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/art.24873","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28102729","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}