1. Clinic for Anaesthesiology; Centre for Anaesthesiology; Emergency Medicine and Intensive Care Medicine; University Medical Centre; Georg-August-University of Göttingen; Germany
2. Section ‘Acute Pain’; German Pain Society; Berlin Germany
3. Section ‘Pain Medicine’; German Society for Anaesthesiology and Intensive Care; Nürnberg Germany
4. Department of Anaesthesiology; Pain Medicine; Intensive Care and Emergency Medicine; DRK Hospital Berlin Westend; Germany
5. Department of Anaesthesiology and Intensive Care Medicine; Jena University Hospital; Germany
6. Department of Anaesthesiology and Pain Medicine; Inselspital; Bern Switzerland
7. Department of Clinical Research; University of Bern; Switzerland