2 European Pain Federation EFIC, Societal Impact of Pain Platform (SIP), Brussels, Belgium.
3 Institute of Applied Health Sciences, Epidemiology Group, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Department of Anaesthesia, NHS Grampian, Aberdeen, UK, Pain and Opioids after Surgery (PANDOS) ESAIC Research Group, Brussels, Belgium; IMAGINE UR UM 103, Montpellier University, Anesthesia Critical Care, Emergency and Pain Medicine Division, Nîmes University Hospital, Nîmes, France.