1. Key Laboratory of Cardiovascular Epidemiology & Department of Epidemiology, Fuwai Hospital National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
2. Department of Critical Care Medicine Yuhuangding Hospital, Qingdao University Yantai China
3. College of Clinical Medicine Binzhou Medical University Yantai China
4. Department of Cardiology Yantai Yeda Hospital Yantai China
5. Department of Histology and Embryology Binzhou Medical University Yantai China