1. Cardiology Department, Hunan Provincial People’s Hospital, Furong, Changsha 410000, Hunan, China
2. Clinical Research Center for Heart Failure in Hunan Province, Furong, Changsha 410000, Hunan, China
3. Institute of Cardiovascular Epidemiology, Hunan Provincial People’s Hospital, Furong, Changsha 410000, Hunan, China
4. Department of Cardiology, The Central Hospital of ShaoYang, Shaoyang 422000, Hunan, China