1 Pediatric Perioperative Medicine and Intensive Care, Karolinska University Hospital, Stockholm, Sweden.
2 Department of Physiology and Pharmacology (FYFA), Karolinska Institute, C3, Per-Arne Lönnqvist Group - Section of Anesthesiology and Intensive Care, Anestesi- och Intensivvårdsavdelningen, Stockholm, Sweden.
3 Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, University Hospital of Geneva, Geneva, Switzerland.
4 Geneva Neuroscience Center, University of Geneva, Geneva, Switzerland.