Bone & Joint JournalPub Date : 2024-07-01DOI: 10.1302/0301-620X.106B7.BJJ-2024-0136
Luke Farrow, Mingjun Zhong, Lesley Anderson
{"title":"Use of natural language processing techniques to predict patient selection for total hip and knee arthroplasty from radiology reports.","authors":"Luke Farrow, Mingjun Zhong, Lesley Anderson","doi":"10.1302/0301-620X.106B7.BJJ-2024-0136","DOIUrl":"https://doi.org/10.1302/0301-620X.106B7.BJJ-2024-0136","url":null,"abstract":"<p><strong>Aims: </strong>To examine whether natural language processing (NLP) using a clinically based large language model (LLM) could be used to predict patient selection for total hip or total knee arthroplasty (THA/TKA) from routinely available free-text radiology reports.</p><p><strong>Methods: </strong>Data pre-processing and analyses were conducted according to the Artificial intelligence to Revolutionize the patient Care pathway in Hip and knEe aRthroplastY (ARCHERY) project protocol. This included use of de-identified Scottish regional clinical data of patients referred for consideration of THA/TKA, held in a secure data environment designed for artificial intelligence (AI) inference. Only preoperative radiology reports were included. NLP algorithms were based on the freely available GatorTron model, a LLM trained on over 82 billion words of de-identified clinical text. Two inference tasks were performed: assessment after model-fine tuning (50 Epochs and three cycles of k-fold cross validation), and external validation.</p><p><strong>Results: </strong>For THA, there were 5,558 patient radiology reports included, of which 4,137 were used for model training and testing, and 1,421 for external validation. Following training, model performance demonstrated average (mean across three folds) accuracy, F1 score, and area under the receiver operating curve (AUROC) values of 0.850 (95% confidence interval (CI) 0.833 to 0.867), 0.813 (95% CI 0.785 to 0.841), and 0.847 (95% CI 0.822 to 0.872), respectively. For TKA, 7,457 patient radiology reports were included, with 3,478 used for model training and testing, and 3,152 for external validation. Performance metrics included accuracy, F1 score, and AUROC values of 0.757 (95% CI 0.702 to 0.811), 0.543 (95% CI 0.479 to 0.607), and 0.717 (95% CI 0.657 to 0.778) respectively. There was a notable deterioration in performance on external validation in both cohorts.</p><p><strong>Conclusion: </strong>The use of routinely available preoperative radiology reports provides promising potential to help screen suitable candidates for THA, but not for TKA. The external validation results demonstrate the importance of further model testing and training when confronted with new clinical cohorts.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"106-B 7","pages":"688-695"},"PeriodicalIF":4.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bone & Joint JournalPub Date : 2024-07-01DOI: 10.1302/0301-620X.106B7.BJJ-2023-0756.R2
Maximilaan A Poppelaars, Lisa van der Water, Iris Koenraadt-van Oost, Pieter Boele van Hensbroek, Christiaan J A van Bergen
{"title":"Virtual reality reduces anxiety of children in the plaster room: a randomized controlled trial.","authors":"Maximilaan A Poppelaars, Lisa van der Water, Iris Koenraadt-van Oost, Pieter Boele van Hensbroek, Christiaan J A van Bergen","doi":"10.1302/0301-620X.106B7.BJJ-2023-0756.R2","DOIUrl":"10.1302/0301-620X.106B7.BJJ-2023-0756.R2","url":null,"abstract":"<p><strong>Aims: </strong>Paediatric fractures are highly prevalent and are most often treated with plaster. The application and removal of plaster is often an anxiety-inducing experience for children. Decreasing the anxiety level may improve the patients' satisfaction and the quality of healthcare. Virtual reality (VR) has proven to effectively distract children and reduce their anxiety in other clinical settings, and it seems to have a similar effect during plaster treatment. This study aims to further investigate the effect of VR on the anxiety level of children with fractures who undergo plaster removal or replacement in the plaster room.</p><p><strong>Methods: </strong>A randomized controlled trial was conducted. A total of 255 patients were included, aged five to 17 years, who needed plaster treatment for a fracture of the upper or lower limb. Randomization was stratified for age (five to 11 and 12 to 17 years). The intervention group was distracted with VR goggles and headphones during the plaster treatment, whereas the control group received standard care. As the primary outcome, the post-procedural level of anxiety was measured with the Child Fear Scale (CFS). Secondary outcomes included the children's anxiety reduction (difference between CFS after and CFS before plaster procedure), numerical rating scale (NRS) pain, NRS satisfaction of the children and accompanying parents/guardians, and the children's heart rates during the procedure. An independent-samples <i>t</i>-test and Mann-Whitney U test (depending on the data distribution) were used to analyze the data.</p><p><strong>Results: </strong>The post-procedural CFS was significantly lower (p < 0.001) in the intervention group (proportion of children with no anxiety = 78.6%) than in the control group (56.8%). The anxiety reduction, NRS pain and satisfaction scores, and heart rates showed no significant differences between the control group and the intervention group. Subanalyses showed an increased effect of VR on anxiety levels in young patients, females, upper limb fractures, and those who had had previous plaster treatment.</p><p><strong>Conclusion: </strong>VR effectively reduces the anxiety levels of children in the plaster room, especially in young girls. No statistically significant effects were seen regarding pain, heart rate, or satisfaction scores.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"106-B 7","pages":"728-734"},"PeriodicalIF":4.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bone & Joint JournalPub Date : 2024-07-01DOI: 10.1302/0301-620X.106B7.BJJ-2024-0267
Corneliu Bolbocean, Zaid Hattab, Stephen O'Neill, Matt L Costa
{"title":"Are there patients with an intracapsular fracture of the hip who may benefit from an uncemented hemiarthroplasty?","authors":"Corneliu Bolbocean, Zaid Hattab, Stephen O'Neill, Matt L Costa","doi":"10.1302/0301-620X.106B7.BJJ-2024-0267","DOIUrl":"10.1302/0301-620X.106B7.BJJ-2024-0267","url":null,"abstract":"<p><strong>Aims: </strong>Cemented hemiarthroplasty is an effective form of treatment for most patients with an intracapsular fracture of the hip. However, it remains unclear whether there are subgroups of patients who may benefit from the alternative operation of a modern uncemented hemiarthroplasty - the aim of this study was to investigate this issue. Knowledge about the heterogeneity of treatment effects is important for surgeons in order to target operations towards specific subgroups who would benefit the most.</p><p><strong>Methods: </strong>We used causal forest analysis to compare subgroup- and individual-level treatment effects between cemented and modern uncemented hemiarthroplasty in patients aged > 60 years with an intracapsular fracture of the hip, using data from the World Hip Trauma Evaluation 5 (WHiTE 5) multicentre randomized clinical trial. EuroQol five-dimension index scores were used to measure health-related quality of life at one, four, and 12 months postoperatively.</p><p><strong>Results: </strong>Our analysis revealed a complex landscape of responses to the use of a cemented hemiarthroplasty in the 12 months after surgery. There was heterogeneity of effects with regard to baseline characteristics, including age, pre-injury health status, and lifestyle factors such as alcohol consumption. This heterogeneity was greater at the one-month mark than at subsequent follow-up timepoints, with particular regard to subgroups based on age. However, for all subgroups, the effect estimates for quality of life lay within the confidence intervals derived from the analysis of all patients.</p><p><strong>Conclusion: </strong>The use of a cemented hemiarthroplasty is expected to increase health-related quality of life compared with modern uncemented hemiarthroplasty for all subgroups of patients aged > 60 years with a displaced intracapsular fracture of the hip.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"106-B 7","pages":"656-661"},"PeriodicalIF":4.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bone & Joint JournalPub Date : 2024-07-01DOI: 10.1302/0301-620X.106B7.BJJ-2023-0691.R1
Imran Ahmed, Andrew Metcalfe, Paul Baker, Simon Ball, David Beard, Leela Biant, Mark Blyth, Chinmay Gupte, Caroline Hing, Stephen McDonnell, James Murray, Hemant Pandit, Andrew Price, Chloe Scott, Andrew Toms
{"title":"Research priorities of members of the British Association for Surgery of the Knee.","authors":"Imran Ahmed, Andrew Metcalfe, Paul Baker, Simon Ball, David Beard, Leela Biant, Mark Blyth, Chinmay Gupte, Caroline Hing, Stephen McDonnell, James Murray, Hemant Pandit, Andrew Price, Chloe Scott, Andrew Toms","doi":"10.1302/0301-620X.106B7.BJJ-2023-0691.R1","DOIUrl":"https://doi.org/10.1302/0301-620X.106B7.BJJ-2023-0691.R1","url":null,"abstract":"<p><strong>Aims: </strong>This study aims to identify the top unanswered research priorities in the field of knee surgery using consensus-based methodology.</p><p><strong>Methods: </strong>Initial research questions were generated using an online survey sent to all 680 members of the British Association for Surgery of the Knee (BASK). Duplicates were removed and a longlist was generated from this scoping exercise by a panel of 13 experts from across the UK who provided oversight of the process. A modified Delphi process was used to refine the questions and determine a final list. To rank the final list of questions, each question was scored between one (low importance) and ten (high importance) in order to produce the final list.</p><p><strong>Results: </strong>This consensus exercise took place between December 2020 and April 2022. A total of 286 clinicians from the BASK membership provided input for the initial scoping exercise, which generated a list of 105 distinct research questions. Following review and prioritization, a longlist of 51 questions was sent out for two rounds of the Delphi process. A total of 42 clinicians responded to the first round and 24 responded to the second round. A final list of 24 research questions was then ranked by 36 clinicians. The topics included arthroplasty, infection, meniscus, osteotomy, patellofemoral, cartilage, and ligament pathologies. The management of early osteoarthritis was the highest-ranking question.</p><p><strong>Conclusion: </strong>A Delphi exercise involving the BASK membership has identified the future research priorities in knee surgery. This list of questions will allow clinicians, researchers, and funders to collaborate in order to deliver high-quality research in knee surgery and further advance the care provided to patients with knee pathology.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"106-B 7","pages":"662-668"},"PeriodicalIF":4.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bone & Joint JournalPub Date : 2024-07-01DOI: 10.1302/0301-620X.106B7.BJJ-2023-0978.R2
Matthias Schnetz, Roman Maluki, Larissa Ewald, Alexander Klug, Reinhard Hoffmann, Yves Gramlich
{"title":"Above-knee amputation shows higher complication and mortality rates in line with lower functional outcome compared to knee arthrodesis in severe periprosthetic joint infection.","authors":"Matthias Schnetz, Roman Maluki, Larissa Ewald, Alexander Klug, Reinhard Hoffmann, Yves Gramlich","doi":"10.1302/0301-620X.106B7.BJJ-2023-0978.R2","DOIUrl":"https://doi.org/10.1302/0301-620X.106B7.BJJ-2023-0978.R2","url":null,"abstract":"<p><strong>Aims: </strong>In cases of severe periprosthetic joint infection (PJI) of the knee, salvage procedures such as knee arthrodesis (KA) or above-knee amputation (AKA) must be considered. As both treatments result in limitations in quality of life (QoL), we aimed to compare outcomes and factors influencing complication rates, mortality, and mobility.</p><p><strong>Methods: </strong>Patients with PJI of the knee and subsequent KA or AKA between June 2011 and May 2021 were included. Demographic data, comorbidities, and patient history were analyzed. Functional outcomes and QoL were prospectively assessed in both groups with additional treatment-specific scores after AKA. Outcomes, complications, and mortality were evaluated.</p><p><strong>Results: </strong>A total of 98 patients were included, 52 treated with arthrodesis and 47 with AKA. The mean number of revision surgeries between primary arthroplasty and arthrodesis or AKA was 7.85 (SD 5.39). Mean follow-up was 77.7 months (SD 30.9), with a minimum follow-up of two years. Complications requiring further revision surgery occurred in 11.5% of patients after arthrodesis and in 37.0% of AKA patients. Positive intraoperative tissue cultures obtained during AKA was significantly associated with the risk of further surgical revision. Two-year mortality rate of arthrodesis was significantly lower compared to AKA (3.8% vs 28.3%), with age as an independent risk factor in the AKA group. Functional outcomes and QoL were better after arthrodesis compared to AKA. Neuropathic pain was reported by 19 patients after AKA, and only 45.7% of patients were fitted or were intended to be fitted with a prosthesis. One-year infection-free survival after arthrodesis was 88.5%, compared to 78.5% after AKA.</p><p><strong>Conclusion: </strong>Above-knee amputation in PJI results in high complication and mortality rates and poorer functional outcome compared to arthrodesis. Mortality rates after AKA depend on patient age and mobility, with most patients not able to be fitted with a prosthesis. Therefore, arthrodesis should be preferred whenever possible if salvage procedures are indicated.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"106-B 7","pages":"669-679"},"PeriodicalIF":4.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bone & Joint JournalPub Date : 2024-07-01DOI: 10.1302/0301-620X.106B7.BJJ-2023-1113.R1
Umile G Longo, Lawrence V Gulotta, Sergio De Salvatore, Alberto Lalli, Benedetta Bandini, Diana Giannarelli, Vincenzo Denaro
{"title":"Augmented versus non-augmented locking-plate fixation in proximal humeral fractures.","authors":"Umile G Longo, Lawrence V Gulotta, Sergio De Salvatore, Alberto Lalli, Benedetta Bandini, Diana Giannarelli, Vincenzo Denaro","doi":"10.1302/0301-620X.106B7.BJJ-2023-1113.R1","DOIUrl":"10.1302/0301-620X.106B7.BJJ-2023-1113.R1","url":null,"abstract":"<p><strong>Aims: </strong>Proximal humeral fractures are the third most common fracture among the elderly. Complications associated with fixation include screw perforation, varus collapse, and avascular necrosis of the humeral head. To address these challenges, various augmentation techniques to increase medial column support have been developed. There are currently no recent studies that definitively establish the superiority of augmented fixation over non-augmented implants in the surgical treatment of proximal humeral fractures. The aim of this systematic review and meta-analysis was to compare the outcomes of patients who underwent locking-plate fixation with cement augmentation or bone-graft augmentation versus those who underwent locking-plate fixation without augmentation for proximal humeral fractures.</p><p><strong>Methods: </strong>The search was carried out according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Articles involving patients with complex proximal humeral fractures treated using open reduction with locking-plate fixation, with or without augmentation, were considered. A meta-analysis of comparative studies comparing locking-plate fixation with cement augmentation or with bone-graft augmentation versus locking-plate fixation without augmentation was performed.</p><p><strong>Results: </strong>A total of 19 studies were included in the qualitative synthesis, and six comparative studies were included in the meta-analysis. Overall, 120 patients received locking-plate fixation with bone-graft augmentation, 179 patients received locking-plate fixation with cement augmentation, and 336 patients received locking-plate fixation without augmentation. No statistically relevant differences between the augmented and non-augmented cohorts were found in terms of the Disabilities of the Arm, Shoulder and Hand questionnaire score and Constant-Murley Score. The cement-augmented group had a significantly lower rate of complications compared to the non-augmented group.</p><p><strong>Conclusion: </strong>While locking-plate fixation with cement augmentation appears to produce a lower complication rate compared to locking-plate fixation alone, functional outcomes seem comparable between augmented and non-augmented techniques.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"106-B 7","pages":"646-655"},"PeriodicalIF":4.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bone & Joint JournalPub Date : 2024-07-01DOI: 10.1302/0301-620X.106B7.BJJ-2024-0621
Ian A Harris, Verinder S Sidhu, Samuel J MacDessi, Michael Solomon, Fares S Haddad
{"title":"Aspirin for thromboembolic prophylaxis.","authors":"Ian A Harris, Verinder S Sidhu, Samuel J MacDessi, Michael Solomon, Fares S Haddad","doi":"10.1302/0301-620X.106B7.BJJ-2024-0621","DOIUrl":"https://doi.org/10.1302/0301-620X.106B7.BJJ-2024-0621","url":null,"abstract":"","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"106-B 7","pages":"642-645"},"PeriodicalIF":4.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bone & Joint JournalPub Date : 2024-07-01DOI: 10.1302/0301-620X.106B7.BJJ-2024-0594
Elizabeth Ashby, Fares S Haddad
{"title":"Sex and gender in orthopaedic research.","authors":"Elizabeth Ashby, Fares S Haddad","doi":"10.1302/0301-620X.106B7.BJJ-2024-0594","DOIUrl":"https://doi.org/10.1302/0301-620X.106B7.BJJ-2024-0594","url":null,"abstract":"","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"106-B 7","pages":"640-641"},"PeriodicalIF":4.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bone & Joint JournalPub Date : 2024-07-01DOI: 10.1302/0301-620X.106B7.BJJ-2023-1019.R2
Nijiati Yaxier, Yuan Zhang, Jun Song, Bo Ning
{"title":"Clinical evaluation of new bone formation during limb lengthening in children using ultrasound combined with superb microvascular imaging.","authors":"Nijiati Yaxier, Yuan Zhang, Jun Song, Bo Ning","doi":"10.1302/0301-620X.106B7.BJJ-2023-1019.R2","DOIUrl":"https://doi.org/10.1302/0301-620X.106B7.BJJ-2023-1019.R2","url":null,"abstract":"<p><strong>Aims: </strong>Given the possible radiation damage and inaccuracy of radiological investigations, particularly in children, ultrasound and superb microvascular imaging (SMI) may offer alternative methods of evaluating new bone formation when limb lengthening is undertaken in paediatric patients. The aim of this study was to assess the use of ultrasound combined with SMI in monitoring new bone formation during limb lengthening in children.</p><p><strong>Methods: </strong>In this retrospective cohort study, ultrasound and radiograph examinations were performed every two weeks in 30 paediatric patients undergoing limb lengthening. Ultrasound was used to monitor new bone formation. The number of vertical vessels and the blood flow resistance index were compared with those from plain radiographs.</p><p><strong>Results: </strong>We categorized the new bone formation into three stages: stage I (early lengthening), in which there was no obvious callus formation on radiographs and ultrasound; stage II (lengthening), in which radiographs showed low-density callus formation with uneven distribution and three sub-stages could be identified on ultrasound: in Ia punctate callus was visible; in IIb there was linear callus formation which was not yet connected and in IIc there was continuous linear callus. In stage III (healing), the bone ends had united, the periosteum was intact, and the callus had disappeared, as confirmed on radiographs, indicating healed bone. A progressive increase in the number of vertical vessels was noted in the early stages, peaking during stages IIb and IIc, followed by a gradual decline (p < 0.001). Delayed healing involved patients with a prolonged stage IIa or those who regressed to stage IIa from stages IIb or IIc during lengthening.</p><p><strong>Conclusion: </strong>We found that the formation of new bone in paediatric patients undergoing limb lengthening could be reliably evaluated using ultrasound when combined with the radiological findings. This combination enabled an improved assessment of the prognosis, and adjustments to the lengthening protocol. While SMI offered additional insights into angiogenesis within the new bone, its role primarily contributed to the understanding of the microvascular environment rather than directly informing adjustments of treatment.</p>","PeriodicalId":48944,"journal":{"name":"Bone & Joint Journal","volume":"106-B 7","pages":"751-758"},"PeriodicalIF":4.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}