[1] Hong Kong Polytech Univ, Sch Nursing, Hong Kong, Peoples R China
[2] Pamela Youde Nethersole Eastern Hosp, Dept Paediat & Adolescent Med, Chai Wan, Hong Kong, Peoples R China
[3] Univ Technol Sydney, Fac Hlth, Sch Nursing & Midwifery, Sydney, Australia
[4] Nanjing Univ, Jinling Hosp, Affiliated Hosp, Med Sch, Nanjing, Peoples R China