1. BMJ Knowledge Centre; British Medical Journal Technology Assessment Group (BMJ-TAG); BMA House Tavistock Square London UK WC1H 9JR
2. St George's, University of London; Cochrane Airways, Population Health Research Institute; Cranmer Terrace London UK SW17 0RE
3. 28 Beaumont Street Medical Practice; Oxford UK
4. East Lancashire Hospitals NHS Trust; Blackburn Lancashire UK