1. Department of Anaesthesia and Pain Clinic, Ghent University Hospital, De Pintelaan 185, Ghent 9000, Belgium
2. European Medical Affairs Director Analgesia, Janssen–Cilag EMEA, Turnhoutseweg 30, 2340 Beerse, Belgium
3. Dianthus Medical Limited, Lombard Business Park, 8 Lombard Road, London SW19 3TZ, UK