[1] Leeds Metropolitan Univ, Fac Hlth & Social Sci, Sch Social Psychol & Commun Sci, Leeds LS1 3HE, W Yorkshire, England
[2] Univ Leeds, Fac Med & Hlth, Leeds Inst Canc & Pathol, Leeds, W Yorkshire, England
[3] Natl Canc Intelligence Network, London, England
[4] Univ Leeds, Leeds Inst Clin Trials Res, Clin Trials Res Unit, Leeds, W Yorkshire, England
[5] World Hlth Org, Int Agcy Res Canc, Sect Canc Informat, Lyon, France