| Authors: |
Zheng NX; Department of Cardiology, Beijing Hospital National Center of Gerontology Beijing China., Ai H; Department of Cardiology, Beijing Hospital National Center of Gerontology Beijing China., Zhao Y; Department of Cardiology, Beijing Hospital National Center of Gerontology Beijing China., Li H; Department of Cardiology, Beijing Hospital National Center of Gerontology Beijing China., Yang GJ; Department of Cardiology, Beijing Hospital National Center of Gerontology Beijing China., Tang GD; Department of Cardiology, Beijing Hospital National Center of Gerontology Beijing China., Peng X; Department of Cardiology, Beijing Hospital National Center of Gerontology Beijing China., Sun FC; Department of Cardiology, Beijing Hospital National Center of Gerontology Beijing China., Zhang HP; Department of Cardiology, Beijing Hospital National Center of Gerontology Beijing China. |