[1] Univ Bristol, MRC, Integrat Epidemiol Unit, Bristol, Avon, England
[2] Univ Bristol, Sch Social & Community Med, Bristol, Avon, England
[3] Univ Bristol, Dept Econ, Bristol, Avon, England
[4] Univ Bristol, Sch Expt Psychol, UK Ctr Tobacco & Alcohol Studies, Bristol, Avon, England
[5] Univ Hosp Bristol NHS Fdn Trust, Natl Inst Hlth Res Collaborat Leadership Appl Hlt, Bristol, Avon, England