1. Thame UK
2. University of Nottingham; School of Pharmacy; University Park Nottingham UK NG7 2RD
3. Oxford Oxfordshire UK
4. Churchill Hospital, Oxford University Hospitals NHS Trust; Oxford Pain Relief Unit; Old Road Headington Oxford UK OX3 7LE
5. University of Oxford; Pain Research and Nuffield Department of Clinical Neurosciences (Nuffield Division of Anaesthetics); Churchill Hospital Oxford UK OX3 7LJ
6. Plymouth UK