[Yang, Kailian; Liu, Yu; Wu, Shishi] Beijing Univ Chinese Med, Sch Nursing, Beijing, Peoples R China.
[Yang, Kailian; Yin, Xing] Zhaoqing Med Coll, Nursing Dept, Zhaoqing, Peoples R China.
[Wu, Quanying] Chinese Acad Med Sci, Inst Geriatr Med, Natl Ctr Gerontol, Dept Endocrinol,Beijing Hosp, Beijing, Peoples R China.
[Wang, Li] Fangzhuang Community Hlth Serv Ctr, Nursing Dept, Beijing, Peoples R China.
[Li, Jiayue] Beijing Univ Chinese Med, Dongzhimen Hosp, Dept Endocrinol, Beijing, Peoples R China.