[1] Univ Nottingham, Div Med Sci & Grad Entry Med, Nottingham, England
[2] NIHR Appl Res Collaborat East Midlands ARC EM, Nottingham, England
[3] Univ Hertfordshire, Ctr Res Publ Hlth & Community Care CRIPACC, Hatfield, Herts, England
[4] NIHR Appl Res Collaborat East England ARC EoE, Cambridge, England
[5] Leiden Univ, Med Ctr, Leiden, Netherlands
[6] Newcastle Univ, Populat Hlth Sci Inst, Newcastle Upon Tyne, Tyne & Wear, England
[7] Leeds Teaching Hosp NHS Trust, Leeds, W Yorkshire, England
[8] NIHR Appl Res Collaborat North East & North Cumbr, Newcastle Upon Tyne, Tyne & Wear, England
[9] Kings Coll London, London, England
[10] City Univ London, London, England
[11] Trinity Coll Dublin, Dept Med Gerontol, Dublin, Ireland
[12] Maastricht Univ, CAPHRI Care & Publ Hlth Res Inst, Dept Hlth Serv Res, Maastricht, Netherlands
[13] Univ Leeds, Sch Healthcare, Leeds, W Yorkshire, England