[1] Acad Med Ctr, Amsterdam, Netherlands
[2] Tergooi Hosp, POB 10016, NL-1201 DA Hilversum, Netherlands
[3] Catharina Hosp, Dept Emergency, Eindhoven, Netherlands
[4] Catharina Hosp, Dept Anaesthesiol Intens Care & Pain, Eindhoven, Netherlands
[5] Tech Univ, Eindhoven, Netherlands
[6] Westfriesgasthuis, Emergency Dept, Hoorn, Netherlands
[7] Albert Schweitzer Hosp, Emergency Dept, Dordrecht, Netherlands
[8] St Elizabeth Hosp, Emergency Dept, Tilburg, Netherlands
[9] Maxima Med Ctr, Emergency Dept, Veldhoven, Netherlands
[10] Tergooi Hosp, Dept Paediat, Blaricum, Netherlands