1. Department of Anesthesiology, Qingdao Haici Hospital, Qingdao, Shandong, China
2. Department of Cardiology, Qingdao Center Hospital, Qingdao, Shandong, China
3. Department of Intervention, Qingdao Center Hospital, Qingdao, Shandong, China
4. Department of Respiratory Diseases, Qingdao Haici Hospital, Qingdao, Shandong, China