[1] North Bristol NHS Trust, Bristol, England
[2] Univ Bristol, Bristol, England
[3] Cardiff Univ, Div Populat Med, Cardiff, Wales
[4] Cardiff Univ, Ctr Trials Res, Cardiff, Wales
[5] Univ Leicester, Dept Cardiovasc Sci, Leicester, England
[6] Univ Leicester, NIHR Leicester Biomed Res Ctr, Leicester, England
[7] UCL, Inst Clin Trial & Methodol, MRC Clin Trials Unit UCL, London, England
[8] Hlth Data Res UK, BHF Data Sci Ctr, London, England