Copd_a_325330 2575..2584

1National Center for Respiratory Medicine, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, People’s Republic of China; 2Department of Geriatrics, National Clinical Key Specialty, Guangzhou First People’s Hospital, South China University of Technology, Guangzhou, 510180, People’s Republic of China; 3The Pulmonary Medicine, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, People’s Republic of China; 4GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou, 511436, People’s Republic of China