1. Acute Medicine, Heartlands Hospital NHS Foundation Trust, Birmingham, UK
2. Department of Obstetrics and Gynaecology, Jersey General Hospital, Jersey, UK
3. Clinic for Pediatric Surgery, Institute for the Healthcare of Youth and Children of Vojvodina, University of Novi Sad, Novi Sad, Serbia
4. Department for Surgery and Anesthesia, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
5. Medicine & Cardiovascular Division, St George’s University Hospitals NHS Foundation Trust, London, UK
6. Pain Medicine, Chelsea and Westminster Hospital NHS Foundation Trust, London, UK
7. Anaesthetics Section, Department of Surgery and Cancer, Imperial College London, London, UK
8. Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, European Medical School Oldenburg-Groningen, Carl von Ossietzky University Oldenburg, Oldenburg, Germany