Zhangqi Dou, Xinru Chen, Jun Chen, Hua Yang, Jiaqi Chen
{"title":"Chronic Obstructive Pulmonary Disease and Osteoporosis: A Two-Sample Mendelian Randomization Analysis.","authors":"Zhangqi Dou, Xinru Chen, Jun Chen, Hua Yang, Jiaqi Chen","doi":"10.15326/jcopdf.2024.0501","DOIUrl":"10.15326/jcopdf.2024.0501","url":null,"abstract":"<p><strong>Background: </strong>There is a global increase in the prevalence of osteoporosis and chronic obstructive pulmonary disease (COPD). Studies based on observation revealed a higher incidence of osteoporosis in patients with COPD. We looked into the genetic relationship between COPD and osteoporosis using the Mendelian randomization (MR) technique.</p><p><strong>Methods: </strong>The inverse variance-weighted (IVW) method was the primary technique used in this MR investigation. The sensitivity was assessed using the simple median, weighted median, penalized weighted median, and MR Egger regression analysis.</p><p><strong>Results: </strong>The IVW model demonstrated that genetically determined COPD is causally associated with an elevated risk of osteoporosis (odds ratio [OR] fixed-effect, 1.010; 95% confidence interval [CI], 1.001-1.019, <i>P</i>=0.021; OR random-effect, 1.010; 95% CI, 1.001-1.020, <i>P</i>=0.039). It was also found that this correlation held valid for the simple and weighted median, Penalized weighted, MR-Egger, and MR Egger (bootstrap) approaches. No heterogeneity was found in the IVW or MR-Egger analysis results (Q=131.374, <i>P</i>=0.061 and Q=128.895, <i>P</i>=0.069, respectively). Furthermore, no pleiotropic influence via genetic variations was revealed by MR-Egger regression (intercept, -0.0002; <i>P</i>=0.160). No one single nucleotide polymorphism was found to have a substantial impact on the relationship between COPD and osteoporosis by the leave-one-out sensitivity analysis.</p><p><strong>Conclusion: </strong>Our MR analysis demonstrated a substantial positive impact of COPD on the risk of osteoporosis.</p>","PeriodicalId":51340,"journal":{"name":"Chronic Obstructive Pulmonary Diseases-Journal of the Copd Foundation","volume":" ","pages":"416-426"},"PeriodicalIF":2.3,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11363972/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140874957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Real-World Use of Inhaled COPD Medications: the Good, the Bad, the Ugly.","authors":"Valerie G. Press","doi":"10.15326/jcopdf.2024.0546","DOIUrl":"10.15326/jcopdf.2024.0546","url":null,"abstract":"<p><p>Patients with chronic obstructive pulmonary disease (COPD) rely primarily on inhaled medications to control and treat symptoms. Although the medications delivered by inhaler devices are often quite efficacious when delivered to the lung, the real-world effectiveness of these inhaler devices often falls short. Barriers to effective inhaler use include inhaler misuse and cost-related nonadherence. Inhaler misuse can be reduced with appropriate education which leads to improved outcomes. Education can be provided in multiple settings by a wide array of clinicians and clinical team members including pharmacists, respiratory therapists, nurses, physicians, advanced practice nurses, physician assistants, and community health workers, among others. However, despite decades of research and existing effective strategies across settings and types of educators, overall not much progress has been made with respect to effective inhaler technique among populations of patients with COPD in nearly half a century. Similarly, cost-related nonadherence is a long-standing and critical barrier to effective control of COPD, with limited improvements, especially until very recently. This perspective reviews the current promising directions for inhaler-based therapies, ongoing challenges, and critical issues requiring urgent attention.</p>","PeriodicalId":51340,"journal":{"name":"Chronic Obstructive Pulmonary Diseases-Journal of the Copd Foundation","volume":"11 4","pages":"331-340"},"PeriodicalIF":2.3,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11363969/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141762524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Relationship Between Tobacco Product Use and Health-Related Quality of Life Among Individuals With COPD in Waves 1-5 (2013-2019) of the Population Assessment of Tobacco and Health Study.","authors":"","doi":"10.15326/jcopdf.2023.0422E","DOIUrl":"10.15326/jcopdf.2023.0422E","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.15326/jcopdf.2023.0422.].</p>","PeriodicalId":51340,"journal":{"name":"Chronic Obstructive Pulmonary Diseases-Journal of the Copd Foundation","volume":"11 4","pages":"436"},"PeriodicalIF":2.3,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11363970/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141762525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"From Invisibility to Inclusion: A Call to Action to Address COPD Disparities in the Lesbian, Gay, Bisexual, Transgender, and Queer+ Community.","authors":"Ninad T Maniar, M Bradley Drummond","doi":"10.15326/jcopdf.2024.0496","DOIUrl":"10.15326/jcopdf.2024.0496","url":null,"abstract":"<p><p>COPD is a significant cause of morbidity and mortality both in the United States and worldwide. Lesbian, gay, bisexual, transgender, or queer + (LGBTQ+) individuals (the plus sign indicates inclusion of people who are questioning, intersex, asexual, or who hold other gender/sex/romantic identities not specifically identified) have a higher rate of tobacco smoking, predisposing them to an increased risk of developing COPD. Despite this risk, the burden of COPD in LGBTQ+ individuals is not known. Moreover, there is limited focus on efforts to identify and reduce disease risk in this population. In this perspective, we present the results of a focused literature review of COPD in LGBTQ+ populations. We found only 8 studies that reported the prevalence of COPD in different subgroups of the LGBTQ+ population. All studies found an increased prevalence of COPD in the studied LGBTQ+ sub-groups compared to their heterosexual and/or cisgender counterparts. We propose a 3-pronged call to action to improve the care of LGBTQ+ people with COPD. First, we must improve awareness and education about COPD in the LGBTQ+ community through the effective development and dissemination of educational resources to LGBTQ+ people and their health care providers. Second, we call for prevention and intervention efforts through targeted tobacco cessation initiatives and case-finding via screening spirometry among symptomatic LGBTQ+ smokers. Finally, well-designed cohort studies are required to better characterize the COPD burden among LGBTQ+ populations. With targeted approaches in these 3 areas, we can improve the health of this vulnerable population, historically marginalized by current COPD research efforts.</p>","PeriodicalId":51340,"journal":{"name":"Chronic Obstructive Pulmonary Diseases-Journal of the Copd Foundation","volume":" ","pages":"326-330"},"PeriodicalIF":2.3,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11216229/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140337614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tyus A Kemper, Han Woo, Daniel Belz, Ashraf Fawzy, Wendy Lorizio, Michelle N Eakin, Nirupama Putcha, Meredith C McCormack, Emily P Brigham, Corrine Hanson, Abigail L Koch, Nadia N Hansel
{"title":"Higher Plasma Omega-3 Levels are Associated With Improved Exacerbation Risk and Respiratory-Specific Quality of Life in COPD.","authors":"Tyus A Kemper, Han Woo, Daniel Belz, Ashraf Fawzy, Wendy Lorizio, Michelle N Eakin, Nirupama Putcha, Meredith C McCormack, Emily P Brigham, Corrine Hanson, Abigail L Koch, Nadia N Hansel","doi":"10.15326/jcopdf.2023.0468","DOIUrl":"10.15326/jcopdf.2023.0468","url":null,"abstract":"<p><strong>Background: </strong>Omega-3 polyunsaturated fatty acids (PUFAs) have been associated with systemic anti-inflammatory responses. Dietary intake of omega-3 PUFAs eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) has also been associated with lower chronic obstructive pulmonary disease (COPD) morbidity using self-report food frequency questionnaires.</p><p><strong>Objective: </strong>The objective of this study was to investigate the relationship between measured PUFA intake using plasma EPA+DHA levels and COPD morbidity.</p><p><strong>Methods: </strong>Former smokers with moderate-to-severe COPD living in low-income communities were enrolled in a 6-month prospective cohort study. Participants completed standardized questionnaires, spirometry, and plasma samples at 3-month intervals. Total plasma PUFAs were analyzed using gas chromatography/mass spectrometry for DHA and EPA concentrations. Linear or logistic mixed model regression was used to evaluate EPA+DHA's and COPD morbidity's association, accounting for demographics, lung function, pack years, comorbidities, and neighborhood poverty.</p><p><strong>Results: </strong>A total of 133 plasma EPA+DHA samples from 57 participants were available. Participants exhibited average plasma EPA and DHA levels of 14.7±7.3µg/mL and 40.2±17.2µg/mL, respectively, across the 3 clinic visits. Each standard deviation increase in EPA+DHA levels was associated with 2.7 points lower St George's Respiratory Questionnaire score (95% confidence interval [CI] -5.2, -0.2) and lower odds of moderate exacerbation (odds ratio 0.4; 95% CI 0.2, 0.9), but lacked significant association with the COPD Assessment Test score (95% CI -2.4, 0.8), modified Medical Research Council dyspnea scale (95% CI -02, 0.2), or severe exacerbations (95% CI 0.3, 1.4).</p><p><strong>Conclusion: </strong>Plasma EPA+DHA levels are associated with better respiratory-specific quality of life and lower odds of moderate exacerbations in patients with moderate-to-severe COPD. Further research is warranted to investigate the efficacy of an omega-3 dietary intervention in the management of COPD morbidities.</p>","PeriodicalId":51340,"journal":{"name":"Chronic Obstructive Pulmonary Diseases-Journal of the Copd Foundation","volume":" ","pages":"293-302"},"PeriodicalIF":2.3,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11216231/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140854367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Exploring the Role of Gut-Lung Interactions in COPD Pathogenesis: A Comprehensive Review on Microbiota Characteristics and Inflammation Modulation.","authors":"Zi-Xuan Cheng, Jing Zhang","doi":"10.15326/jcopdf.2023.0442","DOIUrl":"10.15326/jcopdf.2023.0442","url":null,"abstract":"<p><p>Chronic obstructive pulmonary disease (COPD) is a paramount contributor to global morbidity and mortality. Over the past decade, the concept of the \"gut-lung axis\" has emerged, offering a lens through which to examine the intricate interplay between the host, microbiome, and respiratory diseases, including COPD. An expanding body of evidence underscores that the composition of both the gastrointestinal and respiratory microbiome deviates in COPD patients compared to healthy individuals, leading to distinct host immune responses and clinical manifestations. The objective of this review is to provide a concise overview of the role both gut and respiratory microbiome play in the development of COPD. This was accomplished by compiling current literature on the microbiome profile in stable and exacerbated cases of COPD, as well as exploring the biological mechanisms through a discussion of relevant experiments conducted on murine models. Hallmark characteristics of the microbial profile in COPD encompass reduced <i>Prevotella</i> species in the respiratory microbiome, culminating in a loss of anti-inflammatory protection, and diminished Bacteroidetes in the gut microbiome, leading to a decrease in protective short-chain fatty acids. The proliferation of Proteobacteria, particularly the <i>Haemophilus</i> species, <i>Moraxella</i>species, and <i>Pseudomonas</i> species contribute to COPD pathologies via recognition of proinflammatory lipopolysaccharide via Toll-like receptors. As a consequence, deteriorated pulmonary function, enhanced severity, increased onset of exacerbations, and elevated mortality were observed.</p>","PeriodicalId":51340,"journal":{"name":"Chronic Obstructive Pulmonary Diseases-Journal of the Copd Foundation","volume":" ","pages":"311-325"},"PeriodicalIF":2.3,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11216226/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140337613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mark L Brantly, Brooks T Kuhn, Humam W Farah, Ravi Mahadeva, Alexandra Cole, Catherina L Chang, Cynthia D Brown, Michael A Campos, Jorge E Lascano, Erin K Babcock, Sharvari P Bhagwat, Teresa F Boyea, Carson A Veldstra, Vasily Andrianov, James L Kalabus, Brendan P Eckelman, Andrew G Veale
{"title":"Recombinant Alpha-1 Antitrypsin-Fc Fusion Protein INBRX-101 in Adults With Alpha-1 Antitrypsin Deficiency: A Phase 1 Study.","authors":"Mark L Brantly, Brooks T Kuhn, Humam W Farah, Ravi Mahadeva, Alexandra Cole, Catherina L Chang, Cynthia D Brown, Michael A Campos, Jorge E Lascano, Erin K Babcock, Sharvari P Bhagwat, Teresa F Boyea, Carson A Veldstra, Vasily Andrianov, James L Kalabus, Brendan P Eckelman, Andrew G Veale","doi":"10.15326/jcopdf.2023.0469","DOIUrl":"10.15326/jcopdf.2023.0469","url":null,"abstract":"<p><strong>Background: </strong>Alpha-1 antitrypsin deficiency (AATD) is characterized by low alpha-1 antitrypsin (AAT) levels, predisposing individuals to lung disease. The standard of care, plasma-derived AAT (pdAAT), is delivered as weekly infusions to maintain serum AAT concentrations ≥11µM (≈50% of those in healthy individuals). INBRX-101, a recombinant human AAT-Fc fusion protein, was designed to have a longer half-life and achieve higher AAT levels than pdAAT.</p><p><strong>Methods: </strong>In this phase 1 dose-escalation study (N=31), adults with AATD received 1 dose (part 1) or 3 doses (part 2) of 10 (part 1), 40, 80, or 120mg/kg INBRX-101 every 3 weeks (Q3W) via intravenous infusion. The primary endpoint was safety and tolerability. Secondary endpoints were pharmacokinetics (PK), pharmacodynamics (PD), and immunogenicity of INBRX-101.</p><p><strong>Results: </strong>INBRX-101 was well tolerated. Most treatment-emergent adverse events were grade ≤2. In part 2 (n=18; each dose, n=6), dose-related increases in serum functional AAT (fAAT) were observed; mean fAAT levels remained above the 21 µM target for up to 4 weeks after the final dose in the 120-mg/kg cohort. Antidrug antibodies had no meaningful impact on PK or PD. INBRX-101 was detected in pulmonary epithelial lining fluid (PELF) from all patients assessed (n=11), and PELF fAAT increased after dosing. PK/PD modeling projected steady-state serum fAAT ≥21µM at 120 mg/kg Q3W (average concentration ≈43µM; trough concentration ≈28µM) and Q4W (≈34µM; ≈21µM).</p><p><strong>Conclusion: </strong>The favorable safety profile and ability to maintain serum fAAT levels >21µM with extended-interval dosing, support a phase 2 trial evaluating Q3W and Q4W dosing of INBRX-101.</p>","PeriodicalId":51340,"journal":{"name":"Chronic Obstructive Pulmonary Diseases-Journal of the Copd Foundation","volume":"11 3","pages":"282-292"},"PeriodicalIF":2.3,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11216232/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141176559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
María C Fernández-Sánchez, Francisco J Ruiz-López, José A Ros-Lucas, Rubén Andújar-Espinosa, Juan Del Coso, Teresa García-Pastor
{"title":"Persons With Chronic Obstructive Pulmonary Disease and High Levels of Activation Improved Their Physical Activity Skills After an Educational Session.","authors":"María C Fernández-Sánchez, Francisco J Ruiz-López, José A Ros-Lucas, Rubén Andújar-Espinosa, Juan Del Coso, Teresa García-Pastor","doi":"10.15326/jcopdf.2023.0456","DOIUrl":"10.15326/jcopdf.2023.0456","url":null,"abstract":"<p><strong>Background: </strong>Daily physical activity is part of the self-management of patients with chronic obstructive pulmonary disease (COPD), and didactic information sessions may be insufficient for the provision of these skills. Prior activation can determine sensitivity to these sessions. We evaluated whether the activation in patients with COPD, as measured by the Patient Activation Measure (PAM)-13 questionnaire, determined their responses to an educational group session on physical activity (PA), which were measured with actigraphy by the number of steps/day.</p><p><strong>Methods: </strong>We conducted an uncontrolled clinical trial in an outpatient clinic with 75 patients with nonexacerbating COPD (forced expiratory volume in 1 second 30%-80%) who were selected consecutively. Patients were provided with an actigraph that they used for 15 days and completed the PAM-13 questionnaire. On the eighth day, they attended a group educational session where they were given PA information. We compared the changes in activity after the session by pooled PAM levels and the correlation between the change in the number of steps/day and the PAM-13 questionnaire.</p><p><strong>Results: </strong>A total of 26 patients had activation levels of 1-2, while 49 patients had levels of 3-4. After the session, patients in Levels 1-2 decreased their number of steps (-596±42), while those in Levels 3-4 increased them (680±253, <i>p</i><0.01). The level of activation was positively correlated with change in the number of steps/day (<i>p</i><0.05).</p><p><strong>Conclusion: </strong>COPD patients with greater activation showed greater improvements in daily PA after a group educational session.</p>","PeriodicalId":51340,"journal":{"name":"Chronic Obstructive Pulmonary Diseases-Journal of the Copd Foundation","volume":" ","pages":"270-281"},"PeriodicalIF":2.3,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11216225/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140289498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elisha Malanga, Byron Thomashow, Jean Wright, Linda Walsh, Cathy Gray Carlomagno, Jamie Sullivan, Stephanie Williams, Bruce E Miller, Crystal Rothhaar, William Clark, Alan Hamilton, Michael Hess, Delia Prieto Oliver, Vincent Malanga, Peter Amari, James Crapo, David M Mannino
{"title":"The COPD Foundation on Its Twentieth Anniversary.","authors":"Elisha Malanga, Byron Thomashow, Jean Wright, Linda Walsh, Cathy Gray Carlomagno, Jamie Sullivan, Stephanie Williams, Bruce E Miller, Crystal Rothhaar, William Clark, Alan Hamilton, Michael Hess, Delia Prieto Oliver, Vincent Malanga, Peter Amari, James Crapo, David M Mannino","doi":"10.15326/jcopdf.2024.0527","DOIUrl":"10.15326/jcopdf.2024.0527","url":null,"abstract":"","PeriodicalId":51340,"journal":{"name":"Chronic Obstructive Pulmonary Diseases-Journal of the Copd Foundation","volume":"11 3","pages":"247-260"},"PeriodicalIF":2.3,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11216227/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141176565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Barbara P Yawn, Elisabeth Callen, Gabriela Gaona-Villarreal, Asif Shaikh, Wilson D Pace
{"title":"Increased Herpes Zoster Risk With Inhaled Corticosteroid Use for Those With Chronic Obstructive Pulmonary Disease.","authors":"Barbara P Yawn, Elisabeth Callen, Gabriela Gaona-Villarreal, Asif Shaikh, Wilson D Pace","doi":"10.15326/jcopdf.2023.0478","DOIUrl":"10.15326/jcopdf.2023.0478","url":null,"abstract":"","PeriodicalId":51340,"journal":{"name":"Chronic Obstructive Pulmonary Diseases-Journal of the Copd Foundation","volume":" ","pages":"303-306"},"PeriodicalIF":2.3,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11216224/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140289497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}