[1] Univ Hull, Hull York Med Sch, Cottingham Rd, Kingston Upon Hull HU6 7RX, Yorks, England
[2] Univ Hull, Hull York Med Sch, Primary Care Med, Kingston Upon Hull, Yorks, England
[3] Univ Warwick, Div Hlth Sci, Warwick Med Sch, Warwick, England
[4] Birmingham City Univ, Ctr Social Care Hlth & Related Res, Implementat Sci, Birmingham, W Midlands, England
[5] Univ Durham, Dept Sport & Exercise Sci, Durham, England
[6] Univ Oxford, Nuffield Dept Populat Hlth, Canc Screening, Oxford, England