1. Department of Health, Results for Development, P.O.Box 389 - 00621, Nairobi, Kenya
2. Department of Health Research for Development International, Yaoundé, Cameroon
3. Department of Health Research, Recherche pour la Santé et le Développement (RESADE), Ouagadougou, Burkina Faso
4. Department of Health, Results for Development, Washington, DC, United States