1. Division of Primary Care & National Institute for Health Research, School of Medicine University of Nottingham Nottingham U.K.
2. Centre of Evidence Based Dermatology University of Nottingham Nottingham U.K.
3. Division of Population Medicine School of Medicine Cardiff University Cardiff U.K.
4. Dermatology Department Norfolk and Norwich University Hospital NHS Trust Norwich U.K.
5. Patient representative University of Nottingham Nottingham U.K.