1. Department of Tropical Medicine, Centre for Applied Malaria Research and Evaluation, Tulane School of Public Health and Tropical Medicine, 1440 Canal Street, Suite 2350, New Orleans, LA 70112, USA
2. National Malaria Control Programme, Dar es Salaam, Tanzania
3. Ifakara Health Institute, Dar es Salaam, Tanzania
4. U. S. President’s Malaria Initiative, United States Agency for Development, Dar es Salaam, Tanzania