
The Association Between COPD, Acute Exacerbations of COPD, and Survival in COPD, with Fat-Free Body Mass Index: A ...
1College of Food Science, Northeast Agricultural University, Harbin, People’s Republic of China; 2Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Panzhihua University, Panzhihua, People’s Republic of China; 3Department of …