1. Medical Cannabis Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
2. Department of Medicine, Sapphire Medical Clinics, London, UK
3. Department of Trauma & Orthopaedics, St. George’s Hospital NHS Trust, London, UK
4. Department of Palliative Medicine, Guy’s & St. Thomas’ NHS Foundation Trust, London, UK
5. Department of Neurology, Buckinghamshire Healthcare NHS Trust, Amersham, UK
6. Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
7. Centre for Affective Disorders, South London & Maudsley NHS Foundation Trust, London, UK