1. Department of Cardiology, Jinhua Hospital of TCM Affiliated to Zhejiang University of Traditional Chinese Medicine, Jinhua, Zhejiang 321000, P.R. China
2. Department of Cardiology, Yiwu Central Hospital, Yiwu, Zhejiang 322000, P.R. China
3. Department of Geriatrics, Zhejiang Jinhua Guangfu Hospital, Jinhua, Zhejiang 321000, P.R. China