1. Department of Internal Medicine, Hebei Medical University, Shijiazhuang, China
2. Department of Cardiology, Hebei General Hospital, Shijiazhuang, China
3. Department of Medical Examination Center, Hebei General Hospital, Shijiazhuang, China
4. Department of Geriatric Cardiology, Hebei General Hospital, Shijiazhuang, China
5. Department of Pain Medicine, Hebei General Hospital, Shijiazhuang, China
6. Department of Cardiology, The Third Hospital of Shijiazhuang City Affiliated to Hebei Medical University, Shijiazhuang, China
7. Department of Internal Medicine, Hebei North University, Zhangjiakou, China