[1] Chinese Acad Med Sci & Peking Union Med Coll, Peking Union Med Coll Hosp, Dept Nursing, Beijing 100730, Peoples R China
[2] China Japan Friendship Hosp, Dept Nursing, Beijing 100029, Peoples R China
[3] Peking Univ, Peoples Hosp, Dept Endocrinol, Beijing 100044, Peoples R China
[4] Sichuan Univ, West China Hosp, West China Sch Nursing, Dept Endocrinol & Metab, Chengdu 610041, Sichuan, Peoples R China
[5] Capital Med Univ, Beijing Friendship Hosp, Beijing 100050, Peoples R China
[6] Cent South Univ, Xiangya Hosp 2, Dept Metab & Endocrinol, Clin Nursing Teaching & Res Sect, Changsha 410011, Hunan, Peoples R China
[7] China Japan Friendship Hosp, Resp Ctr, Beijing 100029, Peoples R China
[8] Tsinghua Univ, Beijing Tsinghua Changgung Hosp, Sch Clin Med, Dept Endocrinol, Beijing 102218, Peoples R China