1 Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Hong Kong SAR, China; Allergy Centre, Union Hospital, Hong Kong SAR, China. Electronic address: cgt560@hku.hk.
2 Section of Allergy and Clinical Immunology, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, Colo.
3 Section of Allergy and Clinical Immunology, Dartmouth-Hitchcock Medical Center, Lebanon, NH.
4 British Columbia Children's Hospital Research Institute, Vancouver, BC, Canada; Division of Allergy and Immunology, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada.
5 Division of Allergy and Immunology, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada; Department of Pediatrics, Section of Allergy and Clinical Immunology, University of Manitoba, Winnipeg, MB, Canada.
6 Division of Allergy and Immunology, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada; Community Allergy Clinic, Victoria, BC, Canada.
7 British Columbia Children's Hospital Research Institute, Vancouver, BC, Canada; Community Allergy Clinic, Victoria, BC, Canada.
8 Division of Allergy and Immunology, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada.
9 Pediatric Allergy and Immunology, Department of Pediatrics, Stollery Children's Hospital, University of Alberta, Edmonton, AB, Canada.