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