Published on in Vol 21, No 5 (2019): May
1 Xiangya School of Nursing, Central South University, Changsha, China
2 Xiangya-Oceanwide Health Management Research Institute, Central South University, Changsha, China
3 Department of Geriatrics, Xiangya Hospital, Changsha, China
4 National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
*all authors contributed equally