Affiliation: | 1.Institute of Cardiovascular Diseases of PLA, the Second Affiliated Hospital, Third Military Medical University (Army Medical University), Chongqing, 400037, China ;2.Department of Cardiology, the Second Affiliated Hospital, Third Military Medical University (Army Medical University), Chongqing, 400037, China ;3.Department of Health Care and Geriatrics, the 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, China ;4.Department of Respiratory Medicine, the Second Affiliated Hospital, Third Military Medical University (Army Medical University), Chongqing, China ;5.Department of Medical Ultrasonics, the Second Affiliated Hospital, Third Military Medical University (Army Medical University), Chongqing, 400037, China ; |