[1] Natl Univ Singapore NUS, Yong Loo Lin Sch Med, Dept Paediat, Singapore, Singapore
[2] Natl Univ Hlth Syst NUHS, Khoo Teck Puat Natl Univ Childrens Med Inst, Singapore, Singapore
[3] Natl Univ Singapore, Yong Loo Lin Sch Med, Human Potential Translat Res Programme, Singapore City, Singapore
[4] Natl Ctr Child Hlth & Dev, Allergy Ctr, Tokyo, Japan
[5] Natl Ctr Child Hlth & Dev, Med Support Ctr Japan Environm & Childrens Study J, Tokyo, Japan
[6] Chinese Univ Hong Kong, Prince Wales Hosp, Dept Paediat, Hong Kong, Peoples R China
[7] Chinese Univ Hong Kong, Hong Kong Hub Paediat Excellence, Hong Kong, Peoples R China
[8] Natl Univ Singapore, Yong Loo Lin Sch Med, Dept Paediat, Div Allergy Immunol & Rheumatol, 1E Kent Ridge Rd, NUHS Tower Block Level 12, Singapore 119228, Singapore