[1] Univ Nottingham, Sch Med, Nottingham, England
[2] Kings Coll London, Dept Populat Hlth Sci, London, England
[3] Univ Manchester, Geoffrey Jefferson Brain Res Ctr, Manchester, Lancs, England
[4] Univ Cent Lancashire, Fac Hlth & Care, Preston, Lancs, England
[5] Univ Glasgow, Sch Hlth & Wellbeing, Glasgow, Lanark, Scotland
[6] Univ Leeds, Clin Trials Res Unit, Leeds, England
[7] Univ East Anglia, Norwich Med Sch, Norwich, Norfolk, England
[8] Univ Nottingham, Sch Med, UKDifferent Strokes, Nottingham, England
[9] Univ Leeds, Leeds Inst Hlth Sci, Leeds, W Yorkshire, England