[1] Alice Ho Miu Ling Nethersole Hosp, Med Unit, Hong Kong, Hong Kong, Peoples R China
[2] Dept Med & Therapeut, Hong Kong, Hong Kong, Peoples R China
[3] Prince Wales Hosp, Dept Surg, Hong Kong, Hong Kong, Peoples R China
[4] Prince Wales Hosp, Dept Med & Therapeut, Hong Kong, Hong Kong, Peoples R China