1. Department of Cardiology, Tongji University Affiliated Tongji Hospital, Shanghai 200065, P.R. China
2. Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Wenzhou Medical University, Ruian, Zhejiang 325200, P.R. China
3. Department of Cardiology, The West Coast New Area of Qingdao Traditional Chinese Medicine Hospital, Qingdao, Shandong 266500, P.R. China
4. Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
5. Cardiovascular Department of Internal Medicine, Central Hospital of Karamay, Karamay, Xinjiang 834000, P.R. China