About the Authors

Lewis John Haddow

lewis.haddow@ucl.ac.uk

Affiliation Centre for Sexual Health and HIV Research, Research Department of Infection and Population Health, University College London, London, United Kingdom

Sian Floyd

Affiliation Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom

Andrew Copas

Affiliation Centre for Sexual Health and HIV Research, Research Department of Infection and Population Health, University College London, London, United Kingdom

Richard John Cary Gilson

Affiliation Centre for Sexual Health and HIV Research, Research Department of Infection and Population Health, University College London, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Performed literature search and collected data: LH. Conceived and designed the experiments: LH SF. Analyzed the data: LH SF AC. Wrote the paper: LH SF AC RG.