[1] Duke Kunshan Univ, Global Hlth Res Ctr, Acad Bldg 3038 8 Duke Ave, Kunshan 215316, Jiangsu, Peoples R China
[2] Nanjing Med Univ, Affiliated Suzhou Hosp, Suzhou Municipal Hosp, Gusu Sch,Dept Geriatr Med, Suzhou 215002, Jiangsu, Peoples R China
[3] Gusu Dist Wumengiao St Nanhuan Community Hlth Ser, Suzhou 215008, Jiangsu, Peoples R China
[4] Gusu Dist Pingjiang St Loujiang Community Hlth Se, Suzhou 215008, Jiangsu, Peoples R China