1. Department of Population and Family Health, Columbia University Mailman School of Public Health, New York City, NY, USA
2. Former Director, Division of Policy Planning Monitoring and Evaluation, Ghana Health Service, Accra, Ghana
3. John Snow, Inc., Arlington, VA, USA
4. Department of Population, Family, and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
5. Department of International Health, Johns Hopkins School of Public Health, Baltimore MD, USA