1. Geriatric Department, Military General Hospital of Chengdu PLA, Chengdu, Sichuan, People’s Republic of China
2. Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, People’s Republic of China
3. Department of Laboratory, Daping Hospital, Third Military Medical University, Chongqing, People’s Republic of China
4. Department of Endocrinology, Daping Hospital, Third Military Medical University, Chongqing, People’s Republic of China