1. Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, China
2. Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, China
3. Health Management Institute, The Affiliated Hospital of Qingdao University, Qingdao, China
4. Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
5. Department of Surgery, Oregon Health and Science University, Portland, OR, USA