1. Academic Clinical Fellow/Core Medical Trainee; Guy's and St Thomas' Hospital NHS Foundation Trust; Westminster Bridge Road London SE1 7EH U.K
2. Division of Epidemiology and Public Health; University of Nottingham; City Hospital; Nottingham U.K
3. Department of Dermatology; Aberdeen Royal Infirmary; Aberdeen U.K
4. Department of Paediatric Dermatology; St John's Institute of Dermatology; Guy's and St Thomas' Hospital NHS Foundation Trust; Westminster Bridge Road London SE1 7EH U.K