1 Department for Anesthesiology and Intensive Care Medicine (KAI), Section Pediatric Anesthesiology, University of Bonn, University Hospital (UKB), Bonn, Germany.
2 Department of Pediatric Perioperative Medicine and Intensive Care, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden.
3 Department of Anesthesia, Montreal Children's Hospital and McGill University, Montreal, Canada.