1. Occupational Health Service, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
2. King’s College London, London, UK
3. Medical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK
4. Centre for Behaviour Change, Department of Clinical, Educational and Health Psychology, University College London, London, UK
5. Dermatology, Circle Nottingham NHS Treatment Centre, Nottingham, UK
6. Centre for the Economics of Mental and Physical Health, King’s College London, London, UK
7. Occupational Health Service, University Hospital Southampton NHS Foundation Trust, Southampton, UK
8. Epidemiology and Biostatistics, Imperial College London, London, UK
9. King’s Clinical Trial Unit, King’s College London, London, UK
10. Medical Microbiology, University College London, London, UK
11. School of Nursing, Midwifery and Social Work, University of Manchester, Manchester, UK
12. Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK