1. Department of Dermatology; King Edward VII Hospital; Windsor UK
2. Centre for Public Health and Primary Care; Queen Mary University of London; London UK
3. Centre of Evidence Based Dermatology; University of Nottingham; Nottingham UK
4. Barts Health NHS Trust; London UK
5. Sandwell and West Birmingham NHS Trust; West Midlands UK
6. Cochrane Skin Group; University of Nottingham; Nottingham UK