[1] Princess Margaret Hosp, Dept Med & Geriatr, Kowloon, Hong Kong, Peoples R China
[2] Kwai Chung Hosp, Consultat & Liaison Psychiat Team, Hong Kong, Hong Kong, Peoples R China
[3] Kwai Chung Hosp, Clin Psychol Serv Unit, Hong Kong, Hong Kong, Peoples R China
[4] Caritas Med Ctr, Dept Med & Geriatr, Hong Kong, Hong Kong, Peoples R China