[1] Univ Hong Kong, Li Ka Shing Fac Med, Sch Nursing, Pokfulam, Hong Kong, Peoples R China
[2] Univ Hong Kong, Fac Social Sci, Dept Social Work & Social Adm, Pokfulam, Hong Kong, Peoples R China
[3] Tuen Mun Hosp, Dept Accid & Emergency Med, Tuen Mun, Hong Kong, Peoples R China
[4] Pok Oi Hosp, Dept Accid & Emergency Med, Yuen Long, Hong Kong, Peoples R China