Institution: | a Department of Pulmonary, Anhui Geriatric Institute, the First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei 230022, Anhui, China b Department of Pulmonary, the First People's Hospital of Hefei, Hefei 230061, Anhui, China c Department of Pulmonary, the First Hospital of Jiande, Baojian Road 6, Jiande 311600, Zhejiang, China d School of Life Science, University of Science and Technology of China, Hefei 230027, Anhui, China |