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History
- Received: November 10, 2013
- Accepted: February 6, 2014
- Published online May 21, 2014.
Copyright & Usage
© Tawfik et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly cited. To view a copy of the license, visit http://creativecommons.org/licenses/by/3.0/
Author Information
- aUniversity Research Co., LLC, Bethesda, MD, USA. Now with Jhpiego, Dhaka, Bangladesh.
- bUniversity Research Co., LLC, Kabul, Afghanistan. Now in Delhi, India.
- cUniversity Research Co., LLC, Kabul, Afghanistan. Now with the Ministry of Public Health [Afghanistan], Kabul, Afghanistan.
- dUniversity Research Co., LLC, Bethesda, MD, USA. Now in Quepos, Costa Rica.
- eUniversity Research Co., LLC, Bethesda, MD, USA.
- Correspondence to Youssef Tawfik (Youssef.Tawfik{at}jhpiego.org).