[1] McGill Univ, Ctr Hlth, Div Allergy & Clin Immunol, Dept Pediat,Montreal Childrens Hosp, 1001 Blvd, Montreal, PQ H4A 3J1, Canada
[2] Univ Calgary, Div Rheumatol, Dept Med, Cumming Sch Med, Calgary, AB, Canada
[3] Sacre Coeur Hop, Dept Emergency Med, Montreal, PQ, Canada
[4] Ctr Hosp Univ St Justine, Div Pediat Emergency Med, Dept Pediat, Montreal, PQ, Canada
[5] Childrens Hosp, London Hlth Sci Ctr, Div Pediat Emergency Med, Dept Pediat, London, ON, Canada
[6] Univ British Columbia, Div Allergy & Immunol, Dept Pediat, BC Childrens Hosp, Vancouver, BC, Canada
[7] Univ British Columbia, Div Clin Pharmacol & Emergency Med, Dept Pediat, BC Childrens Hosp, Vancouver, BC, Canada
[8] Mem Univ, Div Allergy & Immunol, Dept Pediat, Fac Med, St John, NF, Canada
[9] Food Allergy Canada, Toronto, ON, Canada
[10] McMaster Univ, Div Clin Immunol & Allergy, Dept Med, Hamilton, ON, Canada
[11] McMaster Univ, Dept Hlth Res Methods Evidence & Impact, Hamilton, ON, Canada
[12] Univ Toronto, Hosp Sick Children, Dept Pediat, Div Immunol & Allergy, Toronto, ON, Canada