About the Authors

Linda Sharp

Contributed equally to this work with: Linda Sharp, Seonaidh Cotton

linda.sharp@ncri.ie

Affiliation National Cancer Registry Ireland, Cork Airport Business Park, Kinsale Road, Cork, Ireland

Seonaidh Cotton

Contributed equally to this work with: Linda Sharp, Seonaidh Cotton

Affiliation Obstetrics & Gynaecology, University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, Scotland

Julian Little

Affiliation Department of Epidemiology and Community Medicine, University of Ottawa, Ottawa, Ontario, Canada

Nicola M. Gray

Affiliation Centre of Academic Primary Care, University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, Scotland

Margaret Cruickshank

Affiliation Obstetrics & Gynaecology, University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, Scotland

Louise Smart

Affiliation Department of Pathology, Aberdeen Royal Infirmary, Aberdeen, Scotland

Alison Thornton

Affiliation Centre of Academic Primary Care, University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, Scotland

Norman Waugh

Affiliation Medical School, University of Warwick, Coventry, England

Leslie Walker

Affiliation University of Hull, Hull, England

on behalf of the TOMBOLA group

Competing Interests

JL has received fees from GlaxoSmithKline as a member of an Independent Data and Safety Monitoring Committee for a trial of the efficacy of vaccination against HSV. Professor Julian Little was an academic editor for the journal at the time the paper was submitted but does not hold this position now. Neither this nor the competing interests which the authors declared at the time of submission of the original manuscript affects the authors′ adherence to all the PLOS ONE policies on sharing data and materials. None of the other named authors have any relevant interests to declare.

Author Contributions

¶ Membership of the TOMBOLA group is provided in the Acknowledgments.

Conceived and designed the experiments: LSh, SC, JL, NM, LSm, NW, LW. Performed the experiments: LSh, SC, JL, NM, MC, LSm, NW, LW. Analyzed the data: LSh, SC. Contributed reagents/materials/analysis tools: MC, LSm. Wrote the paper: LSh, SC, LW. Data management: SC, AT. Specification of analyses: LSh, SC, JL, NM, NW, LW. Interpretation of results: LSh, SC, JL, NM, MC, LSm, AT, NW, LW. Commenting critically on manuscript drafts: JL, NM, MC, LSm, AT, NW.