[1] UCL, Ctr Ageing Populat Studies, Res Dept Primary Care & Populat Hlth, London, England
[2] Queen Mary Univ London, Wolfson Inst Populat Hlth, Ctr Psychiat & Mental Hlth, London, England
[3] UCL, Sch Pharm, Res Dept Practice & Policy, London, England
[4] Univ Coll London Hosp NHS Fdn Trust, Ctr Med Optimisat Res & Educ, London, England
[5] UCL, UCL Sch Pharm, Res Dept Pharmaceut, London, England
[6] Kings Coll London, NIHR Policy Res Unit Hlth & Social Care Workforce, London, England
[7] Kings Coll London, NIHR Appl Res Collaborat ARC South London, London, England
[8] Queen Mary Univ London, Wolfson Inst Populat Hlth, Ctr Evaluat & Methods, London, England