1. Columbia University, New York, NY, USA;
2. Addis Ababa University, Addis Ababa, Ethiopia;
3. Department of Community Health Sciences, Aga Khan University, Karachi, Pakistan;
4. KLE’S University JN Medical College, Belagavi, India;
5. Bill & Melinda Gates Foundation, Seattle, Washington, USA;
6. RTI International, Durham, NC, USA