Affiliation: | Department of Cardiology, Xuanwu Hospital, Capital Medical University, Beijing, China;Department of Cardiology, Xuanwu Hospital, Capital Medical University, Beijing, China;School of Nursing, Capital Medical University, Beijing, China;Department of Geriatrics, Xuanwu Hospital, Capital Medical University, Beijing, China;Department of Cardiology, Xuanwu Hospital, Capital Medical University, Beijing, China;Department of Cardiology, Xuanwu Hospital, Capital Medical University, Beijing, China |