1. Department of Cardiovascular Surgery, Qingdao Municipal Hospital, Medical College of Qingdao University, Qingdao, Shandong, China
2. Department of Cardiology, Qingdao Municipal Hospital, Medical College of Qingdao University, Qingdao, Shandong, China
3. Department of Mental Intervention, Qingdao Preferential Hospital, Qingdao, Shandong, China