1. Department of Respiratory Diseases, Qingdao Haici Hospital, Shandong, China
2. The Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong, China
3. Department of Cardiology, Qingdao Center Hospital, Shandong, China
4. College of Basic Medicine, Shandong University of Traditional Chinese Medicine, Shandong, China