1. Department of Anesthesia Technology, Prince Sultan Military College of Health Sciences, Dhahran, Saudi Arabia
2. Institute of Applied Health Sciences, School of Medicine, Department of Anaesthesia, Medical Sciences and Nutrition, NHS Grampian, University of Aberdeen, Aberdeen, UK
3. Pain AND Opioids After Surgery (PANDOS) European Society of Anaesthesiology and Intensive Care (ESAIC) Research Group, Brussels, Belgium
4. Department of Anaesthesia, NHS Grampian, Aberdeen, UK
5. IMAGINE UR UM 103, Anesthesia Critical Care, Emergency and Pain Medicine Division, Nîmes University Hospital, Montpellier University, Nîmes, France