[1] Sichuan Univ, Coll Elect & Informat Engn, Chengdu, Peoples R China
[2] Sichuan Univ, West China Sch Med, Chengdu, Peoples R China
[3] Chengdu Univ, Clin Med Coll, Dept Geriatr, Chengdu, Peoples R China
[4] Chengdu Univ, Affiliated Hosp, Chengdu, Peoples R China
[5] Sichuan Univ, West China Hosp, Natl Clin Res Ctr Geriatr, Dept Endocrinol & Metab, Chengdu, Peoples R China
[6] Sichuan Univ, West China Hosp, Natl Clin Res Ctr Geriatr, Dept Geriatr, Chengdu, Peoples R China
[7] Sichuan Univ, Geriatr Hlth Care & Med Res Ctr, Chengdu, Peoples R China