- Correspondence to Dr Shamim Qazi, Department of Maternal, Newborn, Child and Adolescent Health, World Health Organization, 20 Avenue Appia, Geneva 27, 1211, Switzerland;
- Received 19 September 2014
- Accepted 20 October 2014
- Published online 22 January 2015.
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.