1. University of British Columbia; Division of Emergency Medicine, Department of Pediatrics; BC Children's Hospital 4480 Oak St Vancouver BC Canada V6H 3N1
2. Royal Alexandra Children's Hospital; Childrens' Emergency Department; Eastern Road Brighton Sussex UK BN2 5BE
3. IWK Regional Poison Centre; IWK Emergency Department; 5950 University Avenue Halifax NS Canada B3K 6R8
4. IWK Health Centre; Department of Surgery; PO Box 9700, 5850 University Avenue Halifax NS Canada B3K 6R8