About the Authors

Sangeeta S. Dave

sangeeta_s_dave@yahoo.co.uk

Affiliation Institute for Women’s Health, University College London, London, United Kingdom

Andrew Copas

Affiliation Centre for Sexual Health & HIV Research, University College London, London, United Kingdom

John Richens

Affiliation Centre for Sexual Health & HIV Research, University College London, London, United Kingdom

Richard G. White

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

Jayendrakumar K. Kosambiya

Affiliation Department of Community Medicine, Government Medical College, Surat, Gujarat, India

Vikas K. Desai

Affiliation Department of Community Medicine, Government Medical College, Surat, Gujarat, India

Judith M. Stephenson

Affiliation Institute for Women’s Health, University College London, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SSD JS AC JR JKK VD. Analyzed the data: SSD AC JS RGW. Wrote the paper: SSD. Data acquisition: SSD JKK VD. Interpretation of data: SSD AC JS RGW. Critical input: AC JS JR RGW JKK VD. Final approval of version form publication: SSD AC JS JR RGW JKK VD.