- Correspondence to Soazig Clifton, Centre for Population Research in Sexual Health and HIV, Institute for Global Health, University College London, London WC1E 6BT, UK;
- Received November 1, 2017
- Revised January 10, 2018
- Accepted January 15, 2018
- First published March 6, 2018.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.