1. Department of Respiratory Medicine, Wuhu First People’s Hospital, Wuhu, People’s Republic of China
2. Department of Respiratory Medicine, the Second Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
3. the Sencond Department of Respiratory Medicine, General Hospital of Wanbei Coal and Power Group, Suzhou, People’s Republic of China
4. Wuhu First People’s Hospital, Wuhu, People’s Republic of China
5. Department of Respiratory and Critical Medicine, Linyi People’s Hospital, Linyi, People’s Republic of China