1. No. 1 Clinical College, Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Jichang road No.12, Guangzhou, Guangdong 510000, China
2. Department of Cardiology, Guangdong Provincial Hospital of Chinese Medicine, Dade Road No.111, Guangzhou, Guangdong 510000, China
3. Department of Geriatrics, Lingnan Medical Research Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Jichang Road No.16, Guangzhou, Guangdong 510000, China