1. Nuffield Department of Primary Care Health Sciences; University of Oxford; Oxford UK
2. National Drug and Alcohol Research Centre; University of New South Wales; Sydney Australia
3. National Institute for Health Innovation; University of Auckland; Auckland New Zealand
4. Norwich Medical School; University of East Anglia; Norwich UK
5. Tobacco Research and Treatment Center, Department of Medicine; Massachusetts General Hospital and Harvard Medical School; Boston Massachusetts USA
6. Cochrane Australia; School of Public Health & Preventive Medicine, Monash University; Melbourne Australia
7. Wolfson Institute of Preventive Medicine; Barts & The London School of Medicine and Dentistry, Queen Mary University of London; London UK