1 From the Departments of Surgery (NB, SJHB, JL, WW; PAMvL, e-mail: pam.vleeuwen@vumc.nl), Internal Medicine (MARV), Intensive Care (AB), and Pediatrics (JBvG), VU University Medical Center, Amsterdam, The Netherlands; the Department of Surgery, Medical Center Alkmaar, Trial Center Holland Health, Alkmaar, The Netherlands (APJH); and the Department of Pediatrics, Academic Medical Center, Emma Children's Hospital, Amsterdam, The Netherlands (JEO, HS).