[1] Univ Manchester, Manchester Acad Hlth Sci Ctr, NIHR Sch Primary Care Res,Fac Biol Med & Hlth, Div Populat Hlth Hlth Serv Res & Primary Care,Sch, Manchester, Lancs, England
[2] Univ Manchester, Natl Inst Hlth & Care Res, Greater Manchester Patient Safety Translat Res Ctr, Div Populat Hlth Hlth Serv Res & Primary Care, Manchester, Lancs, England
[3] Univ Liverpool, Inst Populat Hlth, Dept Primary Care & Mental Hlth, Liverpool, England
[4] Univ Leeds, Dept Expt Pathol, Leeds, England
[5] Univ Manchester, Div Nursing Midwifery & Social Work, Manchester, England
[6] Univ Manchester, Manchester, Lancs, England
[7] Pennine Care NHS Fdn Trust, Pharm Dept, Ashton Under Lyne, Surrey, England
[8] Univ Manchester, Ctr Pharmacoepidemiol & Drug Safety, Sch Hlth Sci, Div Pharm & Optometry, Manchester, England
[9] Univ Manchester, Manchester Acad Hlth Sci Ctr, NIHR Sch Primary Care Res, Oxford Rd, Manchester M13 9PL, England