[1] Cardiff Univ, Sch Med, Div Populat Med, Primary Care Patient Safety PISA, Cardiff CF10 3AX, S Glam, Wales
[2] Cardiff Univ, Sch Hlthcare Sci, Cardiff CF10 3AX, S Glam, Wales
[3] Cardiff Univ, Cardiff Inst Tissue Engn & Repair CITER, Cardiff CF10 3AX, S Glam, Wales
[4] Cardiff Univ, Ctr Wales, Primary & Emergency Care Res PRIME, Patient Safety Res Leader, Cardiff CF10 3AX, S Glam, Wales
[5] Univ British Columbia, Dept Family Practice, Hlthcare Improvement, Vancouver, BC V5Z 1M9, Canada
[6] Univ West Scotland, Inst Hlthcare Policy & Practice, Hamilton, England