Barts and the London NHS Trust, London, UK, United Kingdom
Newcastle University, Newcastle, United Kingdom
University Hospitals Birmingham NHS Foundation, Birmingham, United Kingdom
University of Bristol Foundation Trust, Bristol, United Kingdom
Tobacco Dependence Research Unit, London, United Kingdom
Queen Mary University London, London, United Kingdom
Tobacco Dependence Research and Treatment Unit, London, United Kingdom
National co-ordinator, London, United Kingdom
Tobacco Dependence Research Unit, London, United Kingdom
Tobacco Dependence Research and Treatment Unit, London, United Kingdom
Barts and the London NHS Trust, London, United Kingdom
Queen Mary University London, London, United Kingdom
Barts and the London NHS Trust, London, England, United Kingdom
Mid Essex NHS Trust - Broomfield Hospital, Chelmsford, United Kingdom
Cambridge University Hospitals NHS Trust - Addenbrooke's Hospital, Cambridge, United Kingdom