[1] Univ Tsukuba, Fac Human Sci, Tsukuba, Japan
[2] Natl Yang Ming Chiao Tung Univ, Aging & Hlth Res Ctr, Sec 2 Li Nong St, Taipei 112, Taiwan
[3] Univ Tokyo, Grad Sch Med, Dept Geriatr Med, Tokyo, Japan
[4] Sichuan Univ, West China Hosp, Ctr Gerontol & Geriatr, Chengdu, Peoples R China
[5] Peking Union Med Coll Hosp, Dept Geriatr Med, 1 ShuaiFuYuan, Beijing 100730, Peoples R China
[6] Kyung Hee Univ, Coll Med, Dept Family Med, Hoegi 1 Dong, Seoul 02447, South Korea
[7] Tan Tock Seng Hosp, Inst Geriatr & Act Ageing, Dept Geriatr Med, Annex 2 Level 3,11 Jalan Tan Tock Seng, Singapore 308433, Singapore
[8] Nanyang Technol Univ, Tan Tock Seng Hosp, Inst Geriatr Med, Inst Geriatr Med,Dept Geritr Med, Annex 2 Level 3,11 Jalan Tan Tock Seng, Singapore 308433, Singapore
[9] Natl Univ Singapore Hosp, Dept Med, Div Geriatr Med, Singapore, Singapore
[10] Univ Malaya, Fac Med, Dept Med, Kuala Lumpur 50603, Malaysia
[11] Natl Yang Ming Chiao Tung Univ, Aging & Hlth Res Ctr, Sec 2,Linong St Beitoou Dist, Taipei City 112304, Taiwan
[12] Mahidol Univ, Fac Med, Siriraj Hosp, Dept Prevent & Social Med, Bangkok, Thailand
[13] Sengkang Gen Hosp, Dept Gen Med, 110 Sengkang East Way, Singapore 544886, Singapore
[14] Chinese Univ Hong Kong, Prince Wales Hosp, Dept Med & Therapeut, Shatin, Ngan Shing St, Hong Kong, Peoples R China
[15] Natl Yang Ming Chiao Tung Univ, Taipei Vet Gen Hosp, Taipei Municipal Gan Dau Hosp, Ctr Hlth Longev & Aging Sci,Ctr Geriatr & Gerontol, Sec 2,Shih Pai Rd, Taipei 11217, Taiwan
[16] Natl Ctr Geriatr & Gerontol, 7-430 Morioka Cho, Obu, Aichi 4748511, Japan