1. Research Fellow, Public Health England, London, UK
2. Senior Statistician, Public Health England, London, UK
3. Consultant Physician, Guy's and St Thomas' NHS Trust, London, UK
4. Consultant Neurologist, Royal Hallamshire Hospital, Sheffield, UK
5. Consultant Neurologist, National Hospital for Neurology and Neurosurgery, London, UK
6. Consultant in Anaesthesia, Intensive Care and Sleep Disorders Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
7. Consultant Neurologist/Clinical Lead – Sleep, Guy's and St Thomas' NHS Trust, London, UK
8. Consultant Neurologist, South Tees NHS Trust, Middlesborough, UK
9. Consultant Physician, Papworth Hospital NHS Foundation, Cambridge, UK
10. Pharmacoepidemiology Research and Intelligence Unit, Medicines and Healthcare Products Regulatory Agency, UK
11. Consultant Epidemiologist, Public Health England, London, UK