Footnotes

• Collaborators PERUKI site representatives: R Alcock, J Barling, J Bayreuther, C Bevan, C Blackburn, T Bolger, A Brown, D Burke, V Choudhery, J Criddle, F Davies, K Dickson-Jardine, C Dieppe, E Gilby, S Hartshorn, P Leonard, K Lenton, M Lyttle, I Maconochie, J Maney, O Marzouk, R McNamara, M Mitchelson, N Mullen, J Mulligan, R O'Sullivan, A Parikh, K Potier, C Powell, A Reuben, G Robinson, J Ross, A Rowland, J Smith, E Sutherland, J Thiagarajan, L Thomas, C Vorwerk, S Wong, P Younge.

• Contributors MDL conceived and designed the article, drafted it and approved the final version. ROS, SH, CB, and FC appraised and assisted in drafting the article, and approved the final version. IKM assisted in the conception, drafting, appraisal and final approval of the article.

• Competing interests None.

• Provenance and peer review Not commissioned; externally peer reviewed.