1 Intensive Care and Department of Pediatric Surgery, Erasmus Medical Center, Sophia Children's Hospital, Rotterdam 3015CN, Netherlands. Electronic address: n.ketharanathan@erasmusmc.nl.
2 Division of Neurosurgery and Neuroscience Institute, Red Cross War Memorial Children's Hospital, University of Cape Town, Cape Town, South Africa.
3 Intensive Care and Department of Pediatric Surgery, Erasmus Medical Center, Sophia Children's Hospital, Rotterdam 3015CN, Netherlands.