Emily E Heming, Ash T Kolstad, Stephen W West, Rylen A Williamson, Alexandra J Sobry, Alexis L Cairo, Brooke Dennett, Kelly Russell, Claude Goulet, Carolyn A Emery
{"title":"Time to Ring in the Body Checking, Head Contact, and Suspected Injury Rates in Youth Ringette: A Video-Analysis Study in Youth Ringette and Female Ice Hockey.","authors":"Emily E Heming, Ash T Kolstad, Stephen W West, Rylen A Williamson, Alexandra J Sobry, Alexis L Cairo, Brooke Dennett, Kelly Russell, Claude Goulet, Carolyn A Emery","doi":"10.1097/JSM.0000000000001293","DOIUrl":"10.1097/JSM.0000000000001293","url":null,"abstract":"<p><strong>Objective: </strong>To compare physical contacts (PCs), including head contacts (HCs), suspected concussion, and nonconcussion injury incidence rates between youth ringette and female ice hockey.</p><p><strong>Design: </strong>Cross-sectional.</p><p><strong>Setting: </strong>Alberta ice arenas.</p><p><strong>Participants: </strong>Players participating in 8 U16AA (ages 14-15 years) ringette and 8 U15AA (ages 13-14 years) female ice hockey games during the 2021 to 2022 season.</p><p><strong>Assessment of risk factors: </strong>Dartfish video-analysis software was used to analyze video recordings.</p><p><strong>Main outcome measures: </strong>Univariate Poisson regression analyses (adjusted for cluster by team-game, offset by game minutes) were used to estimate PCs (including HCs) and suspected injury (concussion and nonconcussion) and concussion-specific IRs and incidence rate ratios (IRRs) to compare sports. Proportions of all PCs that were body checks (level 4-5 trunk PC) and direct HCs (HC1) penalized were reported.</p><p><strong>Results: </strong>Ringette had a 2.6-fold higher rate of body checking compared with hockey (IRR = 2.63, 95% CI: 1.59-4.37). Ringette also had a 2-fold higher rate of HC1 compared with hockey (IRR = 2.08, 95% CI: 1.37-3.16). A 3.4-fold higher rate of suspected injury was found in ringette (IRR = 3.37, 95% CI: 1.40-8.15). There was no significant difference in suspected concussion IRs in ringette compared with hockey (IRR = 1.93, 95% CI: 0.43-8.74). Despite being prohibited in both sports, only a small proportion of body checks (Ringette = 18%; Hockey = 17%) and HC1 (Ringette = 6%; Hockey = 6%) were penalized.</p><p><strong>Conclusions: </strong>Higher rates of body checking, HC1, and suspected injuries were found in ringette compared with female ice hockey. Body checking and HC1 were rarely penalized, despite rules disallowing them in both sports. Future research should consider other youth age groups.</p>","PeriodicalId":10355,"journal":{"name":"Clinical Journal of Sport Medicine","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142544109","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":"Spondylolysis in Adolescent Athletes: A Descriptive Study of 533 Patients.","authors":"James L Moeller","doi":"10.1097/JSM.0000000000001283","DOIUrl":"https://doi.org/10.1097/JSM.0000000000001283","url":null,"abstract":"<p><strong>Objective: </strong>The objective of this descriptive study was to evaluate spondylolysis in adolescent athletes, including age at time of injury, sport associated with injury, examination findings, site of injury, studies used for diagnosis, treatments, duration of treatment, and outcomes.</p><p><strong>Design: </strong>This was a retrospective chart review of patients who presented with a diagnosis of spondylolysis over a 17-year period.</p><p><strong>Setting: </strong>Community primary care sports medicine practice.</p><p><strong>Patients: </strong>All patients between 10 and 20 years of age diagnosed with spondylolysis.</p><p><strong>Interventions: </strong>There was no set intervention protocol. A variety of interventions and combination of interventions were used and determined by the treating physician on a case-by-case basis.</p><p><strong>Main outcome measures: </strong>Clearance for return to sport activity.</p><p><strong>Results: </strong>Males comprised 317 of the 533 patients. Soccer, gymnastics/cheer, football, and basketball were the most common sports associated with spondylolysis. Bilateral injuries were most common. L5 was the most common level for injury. Bracing and formal physical therapy as treatments were associated with longer duration of care. Most patients were treated successfully with nonoperative treatment. Recurrence of injury was rare.</p><p><strong>Conclusions: </strong>Spondylolysis is a common cause of back pain in adolescent athletes. Males are more likely to experience these injuries and are older at presentation compared than females. Spondylosis may be encountered in many sports. Nonoperative treatment leads to successful outcomes in most patients.</p>","PeriodicalId":10355,"journal":{"name":"Clinical Journal of Sport Medicine","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142459591","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}
Patrick Richard Michael Nicholas, Mary Jones, Andy Williams
{"title":"Never Assume Successful Treatment of Septic Arthritis: Bacteria Isolated at Revision ACL Reconstruction 3 Years After Primary ACL Reconstruction \"Successfully\" Treated for Infection.","authors":"Patrick Richard Michael Nicholas, Mary Jones, Andy Williams","doi":"10.1097/JSM.0000000000001287","DOIUrl":"https://doi.org/10.1097/JSM.0000000000001287","url":null,"abstract":"<p><strong>Level of evidence: </strong>Level IV.</p>","PeriodicalId":10355,"journal":{"name":"Clinical Journal of Sport Medicine","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142459589","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}
Kabir Singh, Nikos Malliaropoulos, Mike Callan, Akira Ikumi, Nicola Maffulli
{"title":"Loss of Consciousness in Judo: Not Always a Concussion.","authors":"Kabir Singh, Nikos Malliaropoulos, Mike Callan, Akira Ikumi, Nicola Maffulli","doi":"10.1097/JSM.0000000000001281","DOIUrl":"https://doi.org/10.1097/JSM.0000000000001281","url":null,"abstract":"","PeriodicalId":10355,"journal":{"name":"Clinical Journal of Sport Medicine","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142459588","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}
Paal K Nilssen, Kasey B Johnson, W Douglas B Hiller, Thomas K Miller, Christopher P Connolly
{"title":"Exercise-Associated Muscle Cramps in Ironman-Distance Triathletes Over 3 Decades.","authors":"Paal K Nilssen, Kasey B Johnson, W Douglas B Hiller, Thomas K Miller, Christopher P Connolly","doi":"10.1097/JSM.0000000000001276","DOIUrl":"https://doi.org/10.1097/JSM.0000000000001276","url":null,"abstract":"<p><strong>Objective: </strong>This study aimed to explore associations and trends for athletes experiencing exercise-associated muscle cramps (EAMC) in ultraendurance competitions.</p><p><strong>Design: </strong>Retrospective analysis of prospectively collected data.</p><p><strong>Setting: </strong>Medical tent data were collected from annual IRONMAN World Championship events.</p><p><strong>Participants: </strong>In total, 10 533 medical records were reviewed among 49 530 race participants from 1989 to 2019.</p><p><strong>Assessment of risk factors: </strong>Athlete demographics data, performance data, and additional medical conditions were examined.</p><p><strong>Main outcome measures: </strong>Primary outcome of interest was to compare triathletes with and without EAMC. Secondary outcome was to analyze triathletes with subsequent EAMC.</p><p><strong>Results: </strong>EAMC (N = 2863) occurred in 57.8 per 1000 participants (95% confidence interval = 55.7 to 60.0). The incidence of EAMC did not differ between athlete sex. Athletes with EAMC had greater weight loss but did not differ in serum sodium and serum potassium compared with those without EAMC. Further analysis with a logistic regression analysis revealed that dehydration, exhaustion, hypotension, abdominal pain, headaches, and a previous evaluation for cramping were strongly associated with muscle cramping. The most common treatment for EAMC was intravenous fluids.</p><p><strong>Conclusions: </strong>Findings from the current study support previous reports that electrolyte abnormalities are not associated with cramping. However, our finding that dehydration is associated with muscle cramping contradicts current literature.</p>","PeriodicalId":10355,"journal":{"name":"Clinical Journal of Sport Medicine","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142459587","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}
Matthew Waldrop,Zachary Sitton,Jeremy Swisher,Kiran Mullur,Stephen Davis
{"title":"Give It a Rest: The Impact of Rest Days on Musculoskeletal Injuries Among Starting Pitchers in Major League Baseball.","authors":"Matthew Waldrop,Zachary Sitton,Jeremy Swisher,Kiran Mullur,Stephen Davis","doi":"10.1097/jsm.0000000000001277","DOIUrl":"https://doi.org/10.1097/jsm.0000000000001277","url":null,"abstract":"OBJECTIVEExamine the impact of rest days on musculoskeletal (MSK) injury incidence in Major League Baseball (MLB) starting pitchers.DESIGNDescriptive epidemiological study.SETTINGMLB pitching and injury reports. PARTICIPANTS: MLB starting pitchers.METHODSData (2022-2023) were obtained from Baseball-Reference.com and fangraphs.com. Teams were grouped by average rest days between starts (Group A <5 rest days, Group B >5 rest days). Poisson regression was used to compare main outcome measure incidence rate ratios (IRRs).INDEPENDENT VARIABLESNumber of rest days between starts.MAIN OUTCOME MEASURESPitches per start, MSK injury incidence, injured list (IL) days for MSK injury.RESULTSFrom 2022 to 2023, the average MLB rest days between starts was 4.80. Group A had 54 teams. Group B had 6 teams. The range of average rest days per start by team was 4.56 to 5.73 with a mean of 4.80. Group B pitchers spent 10.7 days on IL for MSK injuries per 1000 pitches, while Group A spent 13.6 days on IL (IRR = 0.78 [95% CI, 0.72-0.85]; P < 0.0001). Group B averaged 0.93 more pitches per start than Group A (P = 0.0164). Group B had a lower number of IL assignments for MSK injuries per 1000 pitches (0.245 vs 0.351, IRR = 0.70 [95% CI, 0.38-1.18]; P = 0.1715).CONCLUSIONSStarting pitchers on MLB teams averaging > 5 rest days between starts spent less time on the IL for MSK injuries than MLB teams averaging < 5 rest days from 2022 to 2023. There was no clinically significant difference in pitch count and no significant difference in the number of IL assignments for MSK injuries.","PeriodicalId":10355,"journal":{"name":"Clinical Journal of Sport Medicine","volume":"110 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267359","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":"The Effect of Bye Weeks on Injury Event Rates in the Canadian Football League.","authors":"Caitlin Lee,Brice Batomen,Dhiren Naidu,Shane Hoeber,Robert McCormack,Russell Steele,Arijit Nandi,Ian Shrier","doi":"10.1097/jsm.0000000000001272","DOIUrl":"https://doi.org/10.1097/jsm.0000000000001272","url":null,"abstract":"OBJECTIVETo determine the effect of bye weeks (no practices or games) on the injury event rate in the Canadian Football League (CFL).DESIGNHistorical (retrospective) cohort study.SETTINGCFL.PARTICIPANTSCFL athletes between 2011 and 2018.INTERVENTIONCFL pseudorandom assignment of bye weeks each season (2011-2013: 1; 2014-2017: 2; 2018: 3).MAIN OUTCOME MEASURESGame injury incident rate ratio (IRR) in the week following a bye week compared with non-bye weeks. Sensitivity analyses: IRR for the 2 and 3 weeks following a bye week. We conducted exploratory analyses for combined game and practice injury events because we did not have the number of players exposed during practice.RESULTSThe IRR was 0.96 (0.87-1.05), suggesting no meaningful effect of a bye week on the post-bye week game injury event rate. We obtained similar results for cumulative game injury events for subsequent weeks: IRR was 1.02 (0.95-1.10) for the 2 weeks following the bye week and 1.00 (0.93-1.06) for the 3 weeks following the bye week. The results were similar with 1, 2, or 3 bye weeks. However, the combined game and practice injury event rate was increased following the bye week [IRR = 1.14 (1.05-1.23)]. These results are expected if the break period results in medical clearance for preexisting injuries; increasing pain in these locations following the bye week would now be considered new injuries instead of \"exacerbations.\"CONCLUSIONSBye weeks do not appear to meaningfully reduce the injury event rate. Furthermore, there was no injury reduction when adding additional bye weeks to the schedule.","PeriodicalId":10355,"journal":{"name":"Clinical Journal of Sport Medicine","volume":"49 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267115","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":"Ultrasound-Guided Percutaneous Ultrasonic Tenotomy for Refractory Patellar Tendinopathy in High-Level Athletes: A Case Series.","authors":"Toru Omodani,Masayoshi Saito,Futoshi Ikuta","doi":"10.1097/jsm.0000000000001275","DOIUrl":"https://doi.org/10.1097/jsm.0000000000001275","url":null,"abstract":"OBJECTIVETo elucidate the clinical outcomes and return-to-sport status of high-level athletes with refractory patellar tendinopathy treated with ultrasound-guided percutaneous ultrasonic tenotomy (PUT).DESIGNCase series study.SETTINGSingle orthopaedic clinic.PATIENTSFive cases involving 8 knees from athletes (average age: 22 years, range: 17-30 years) who presented with refractory patellar tendinopathy and underwent PUT between 2022 and 2024. Conservative treatments had previously been attempted without sufficient pain relief or return to sports.INTERVENTIONSAll patients underwent ultrasound-guided PUT using the TX-2 device from Tenex Health. Jogging was resumed 1 month after surgery, and a return to competitive sports was permitted as early as 3 months postsurgery.MAIN OUTCOME MEASURESPreoperative and postoperative Victorian Institute of Sport Assessment (VISA) scores and Numerical Rating Scale (NRS) scores for pain. Time to return to full training and competitive sports, and presence of postoperative infection signs.RESULTSThe VISA score significantly improved from a preoperative average of 43.1 to a postoperative average of 77.1 (P = 0.0004). The NRS significantly decreased from a preoperative average of 6.4 to a postoperative average of 2.8 (P = 0.0005). Four cases involving 6 knees fully returned to sports, with an average return time of 3 months and 19 days (range: 3 months to 4 months and 13 days). One case involving 2 knees did not show sufficient pain improvement and the patient could not return to sports. No signs of infection were observed in any case.CONCLUSIONSPUT for refractory patellar tendinopathy in high-level athletes generally results in favorable treatment outcomes and successful return to sports. This study provides novel insights into the effectiveness of PUT for patellar tendinopathy in athletes, highlighting the need for future studies with larger sample sizes to validate these findings and explore factors associated with poor outcomes.","PeriodicalId":10355,"journal":{"name":"Clinical Journal of Sport Medicine","volume":"20 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204839","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}
Yiftah Beer, Tzadok Yona, Yuval Arama, Dror Lindner, Grant Garrigues, Francesco Feletti, Lars Blond, Ron Gilat
{"title":"Kiteboarding Injuries: Epidemiology, Common Treatment Strategies, and Time to Return to Kiteboarding Following Injury.","authors":"Yiftah Beer, Tzadok Yona, Yuval Arama, Dror Lindner, Grant Garrigues, Francesco Feletti, Lars Blond, Ron Gilat","doi":"10.1097/JSM.0000000000001270","DOIUrl":"https://doi.org/10.1097/JSM.0000000000001270","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the prevalence and types of injuries incurred during kiteboarding (1), along with treatment approaches (2). In addition, the time to return to kiteboarding following injury (3) and factors associated with the rate and type of injury were analyzed (4).</p><p><strong>Setting: </strong>Recreational kiteboarding.</p><p><strong>Design: </strong>Retrospective cohort.</p><p><strong>Participants: </strong>Three hundred twelve kiteboarders (280 men, 32 women, mean age 42.91 ± 13) were included in the study.</p><p><strong>Independent variables: </strong>Age, sex, experience, and the use of protective gear.</p><p><strong>Main outcome measures: </strong>Kiteboarding experience, injury location, type, incidence, nonsurgical and surgical treatment modalities, and return-to-kiteboarding data.</p><p><strong>Results: </strong>The number of injuries calculated per 1000 sessions was a mean of 7.82 (4.83-10.81). Patients with less than 2 years of kiteboarding experience were at a greater risk of injury than more experienced kiters (P < 0.001). The knee (24.1%), ankle and foot (18.9%), ribs (12.7%), and shoulder (10.2%) were the body parts most frequently injured. Overall, 14.4% of kiters underwent surgical intervention, with knee surgery being the most common site of operation (41.9%) and the most frequently performed procedure being anterior cruciate ligament reconstruction.</p><p><strong>Conclusions: </strong>The pattern of reported injury was found to be different from that previously reported in the scientific literature among freeriding kiters, with knees, ribs, and shoulders being most frequently involved. Participants with <2 years of experience had a significantly greater risk of injury; therefore, proper technical and physical training is advisable.</p>","PeriodicalId":10355,"journal":{"name":"Clinical Journal of Sport Medicine","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142125042","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}
Patrick Gendron, Martin Lamontagne, Camille Fournier-Farley, Dany H Gagnon
{"title":"Prognosticating Return-To-Play Time Following a Hamstring Strain Injury Using Early Flexibility Asymmetry and Musculoskeletal Ultrasound Imaging Outcomes: An Exploratory Study Among Canadian University Football Players.","authors":"Patrick Gendron, Martin Lamontagne, Camille Fournier-Farley, Dany H Gagnon","doi":"10.1097/JSM.0000000000001230","DOIUrl":"10.1097/JSM.0000000000001230","url":null,"abstract":"<p><strong>Objective: </strong>Identify key flexibility and point-of-care musculoskeletal ultrasound (POCUS) measures for prognosticating return-to-play (RTP) following a first hamstring strain injury (HSI) and informing the clinical decision-making process.</p><p><strong>Design: </strong>Exploratory prospective cohort study.</p><p><strong>Setting: </strong>Sport medicine and rehabilitation clinic of a Canadian university.</p><p><strong>Participants: </strong>One hundred and sixty-seven elite Canadian university football athletes followed over 5 seasons.</p><p><strong>Interventions: </strong>Clinical and POCUS measures collected within 7 days after HSI and preseason clinical measures.</p><p><strong>Main outcome measures: </strong>Active knee extension (AKE) and Straight Leg Raise (SLR) to quantify hamstring flexibility, POCUS-related outcomes to characterize tissue alteration, and RTP until full sport resumption were documented (categorized as Early [1-40 days] or Late [>40 days] RTP).</p><p><strong>Results: </strong>A total of 19 and 14 athletes were included in the Early RTP (mean RTP = 28.84 ± 8.62 days) and Late RTP groups (mean 51.93 ± 10.54 days), respectively, after having been diagnosed with a first HSI. For the clinical results, height and a greater flexibility asymmetry measure with the AKE or SLR when compared with both ipsilateral preseason and acute contralateral values significantly increases the chance of facing a long delay before returning to play (ie, RTP). For the POCUS-related results, the Peetrons severity score, extent of the longitudinal fibrillary alteration, and novel score lead to similar results.</p><p><strong>Conclusions: </strong>Early hamstring flexibility asymmetry following acute HSI, particularly the AKE, along with some POCUS-related measures are valuable in prognosticating late RTP following among Canadian university football athletes.</p>","PeriodicalId":10355,"journal":{"name":"Clinical Journal of Sport Medicine","volume":"34 5","pages":"436-443"},"PeriodicalIF":2.1,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142281308","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}