1. University of Birmingham; Institute of Applied Health Research; Birmingham UK B15 2TT
2. University Hospitals Birmingham NHS Foundation Trust and University of Birmingham; NIHR Birmingham Biomedical Research Centre; Birmingham UK
3. Churchill Hospital; Department of Dermatology; Old Road Headington Oxford UK OX3 7LE
4. University of Pittsburgh Medical Center; Internal Medicine; Department of Medicine, Office of Education UPMC Montefiore Hospital, N715 Pittsburgh USA PA, 15213
5. Addenbrooke's Hospital; Plastic Surgery; Hills Road Cambridge UK CB2 0QQ
6. The University of Nottingham; c/o Cochrane Skin Group; Nottingham UK
7. University of Cambridge; Public Health & Primary Care; Strangeways Research Laboratory, Worts Causeway Cambridge UK CB1 8RN
8. University Hospital of Wales; Welsh Institute of Dermatology; Heath Park Cardiff UK CF14 4XW
9. University of Nottingham; Centre of Evidence Based Dermatology; Queen's Medical Centre Derby Road Nottingham UK NG7 2UH