[1] Univ Newcastle, Populat Hlth Sci Inst, Newcastle Upon Tyne NE2 4AX, England
[2] Leeds Teaching Hosp NHS Trust, Natl Pathol Imaging Cooperat, Leeds LS9 7TF, England
[3] Unit 1, Yorkshire & Humber Acad Hlth Sci Network, Unit 1, Calder Pk, Wakefield WF4 3BA, England
[4] Univ Leeds, Dept Pathol, Leeds, England
[5] Linkoping Univ, Dept Clin Pathol, Linkoping, Sweden
[6] Linkoping Univ, Ctr Med Image Sci & Visualizat CMIV, Linkoping, Sweden
[7] Univ Oxford, Ethox Ctr, Oxford OX3 7LF, England
[8] Univ Oxford, Wellcome Ctr Eth & Humanities, Nuffield Dept Populat Hlth, Oxford OX3 7LF, England