1. Occupational Health Service, Guy’s and St Thomas’ NHS Foundation Trust/Faculty of Life Sciences and Medicine, King’s College London, London, UK
2. Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK
3. Dermatology, Circle Nottingham NHS Treatment Centre, Nottingham, UK
4. Medical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK