[1] Chinese Univ Hong Kong, Fac Med, Nethersole Sch Nursing, Shatin, Room 825,Esther Lee Bldg, Hong Kong, Peoples R China
[2] Chinese Univ Hong Kong, Fac Med, Dept Paediat, Shatin, Hong Kong, Peoples R China
[3] Prince Wales Hosp, Dept Paediat, Shatin, Hong Kong, Peoples R China