[1] Tuen Mun Hosp, Dept Paediat & Adolescent Med, Hong Kong, Hong Kong, Peoples R China
[2] Hong Kong Childrens Canc Fdn, Long Term Follow Serv, Hong Kong, Hong Kong, Peoples R China
[3] Chinese Univ Hong Kong, Prince Wales Hosp, Dept Paediat & Adolescent Med, Hong Kong, Hong Kong, Peoples R China
[4] Univ Hong Kong, Queen Mary Hosp, Dept Paediat & Adolescent Med, Hong Kong, Hong Kong, Peoples R China
[5] Princess Margaret Hosp, Dept Paediat & Adolescent Med, Hong Kong, Hong Kong, Peoples R China
[6] Queen Elizabeth Hosp, Dept Paediat & Adolescent Med, Hong Kong, Hong Kong, Peoples R China