1. Consultant Occupational Physician, Newcastle, UK
2. General Practitioner and Research Fellow, Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
3. Honorary Clinical Senior Lecturer, Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
4. Consultant Physician, Queen Elizabeth University Hospital, Glasgow, UK
5. Consultant in Occupational Medicine, London, UK
6. Consultant in Occupational Medicine, Al-Khobar, Saudi Arabia
7. General Practitioner and Occupational Health Physician, Glasgow, UK
8. Occupational Health Physician and Chief Medical Officer, Sunderland City Council, Sunderland, UK