1. Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, China.
2. Department of Geriatric Medicine, Xiangya Hospital, Central South University, Changsha, 410008, China.
3. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China.
4. Department of Emergency Medicine, Second Xiangya Hospital, Central South University, Changsha, 410011, China.
5. Emergency Medicine and Difficult Diseases Institute, Central South University, Changsha, 410011, China.
6. Clinical Nursing Teaching and Research Section, Second Xiangya Hospital, Central South University, Changsha, 410011, China.