1. Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, 600 S. Euclid Avenue, St. Louis, Missouri 63110, United States
2. Medicines for Malaria Venture, ICC, Route de Pré-Bois 20, 1215 Geneva, Switzerland
3. Departments of Medicine and Molecular Microbiology, Washington University School of Medicine in St. Louis, 660 S. Euclid Avenue, St. Louis, Missouri 63110, United States