| Authors: |
Zhang HP; Department of Cardiology, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, P.R. China., Zhao Y; Department of Cardiology, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, P.R. China., Ai H; Department of Cardiology, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, P.R. China., Li H; Department of Cardiology, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, P.R. China., Tang GD; Department of Cardiology, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, P.R. China., Zheng NX; Department of Cardiology, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, P.R. China., Sun FC; Department of Cardiology, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, P.R. China. |