1. Department of Public Health Sciences Karlstad University Karlstad Sweden
2. Lund University Skåne University Hospital, Department of Dermatology Malmö Sweden
3. London School of Hygiene and Tropical Medicine London U.K
4. Centre of Evidence Based Dermatology University of Nottingham Nottingham U.K
5. European Observatory on Health Systems and Policies London U.K
6. University of California San Francisco CA U.S.A
7. St John's Institute of Dermatology LondonU.K