[1] Univ Oxford, UK Biobank, Nuffield Dept Populat Hlth, Oxford OX3 7LF, England
[2] Univ Oxford, Clin Trial Serv Unit, Nuffield Dept Populat Hlth, Oxford OX3 7LF, England
[3] Univ Oxford, Epidemiol Studies Unit, Nuffield Dept Populat Hlth, Oxford OX3 7LF, England
[4] Univ Edinburgh, UK Biobank, Edinburgh EH4 2XU, Midlothian, Scotland
[5] Univ Edinburgh, Edinburgh EH4 2XU, Midlothian, Scotland
[6] UK Biobank, Coordinating Ctr, Stockport SK3 0SA, Lancs, England