[1] Bern University Hospital,Division of Pediatric Emergency Medicine, Department of Paediatrics, Inselspital
[2] University of Bern,Emergency Department, Inselspital, Bern University Hospital
[3] University of Bern,Edwin S.H. Leong Centre for Healthy Children
[4] Division of Pediatric Emergency Medicine,undefined
[5] Hospital for Sick Children,undefined
[6] University of Toronto,undefined