Copd_a_214836 2291..2304

1Department of Pulmonary and Critical Care Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, People’s Republic of China; 2Department of Respiratory Rehabilitation, The Fourth Rehabilitation Hospital of Shanghai (Shanghai Jingan Geriatric Hospital), Shanghai 200042, People’s Republic of China; 3Institute of Respiratory Disease, Shanghai Jiaotong University School of Medicine, Shanghai 200025, People’s Republic of China; 4Department of Respiratory Medicine, The Second Affiliated Hospital of Suzhou University, Jiangsu 215004, People’s Republic of China; 5WestNanjing Road Community Health-care Center of Shanghai, Shanghai 200040, People’s Republic of China; 6Caojiadu Community Health Service of Shanghai, Shanghai 200042, People’s Republic of China