[1] Univ Bern, Univ Hosp, Pediat Emergency Dept, Inselsp, Bern, Switzerland
[2] Geneva Univ Hosp, Childrens Hosp Geneva, Div Pediat Emergency Med, Rue Willy Donze, 6, CH-1205 Geneva, Switzerland
[3] Hirslanden Clin Grangettes, Div Pediat Emergency Med, Geneva, Switzerland
[4] Univ Geneva, Dept Pediat Gynecol & Obstet, Geneva, Switzerland