From the Department of Paediatric Anaesthesia, Istituto Giannina Gaslini, Genoa, Italy (ND); Research Department, European Society of Anaesthesiology (BL, JD); Department Anaesthesiology, Cliniques Universitaires St Luc, Brussels, Belgium (FV); and Division of Anaesthesiology, Unit for Paediatric Anaesthesia, Geneva University Hospitals, Geneva, Switzerland (WH).