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History
- Received: September 26, 2013
- Accepted: December 17, 2013
- Published online February 21, 2014.
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- Previous version (February 6, 2014 - 07:02).
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© Campbell 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 this license, visit http://creativecommons.org/licenses/by/3.0/
Author Information
- aManagement Sciences for Health, Arlington, VA, USA
- bWorld Bank, Washington, DC, USA
- cPublic Health Consultant, Boston, MA, USA
- dManagement Sciences for Health, Boston, MA, USA
- eJohns Hopkins Bloomberg School of Public Health, Center for Communication Programs, Baltimore, MD, USA
- Correspondence to Natalie Campbell (ncampbell{at}msh.org).