Institution: | 1. Pediatric Emergency Department, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern Switzerland ; 2. Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern Switzerland ; 3. Pediatric Emergency Department, Astrid Lindgren Children''s Hospital, Karolinska University Hospital, Stockholm Sweden ; 4. Karolinska Institutet, Department of Women''s and Children''s Health, Stockholm Sweden |