1. Departments of Pathology and Microbiology-Immunology, Northwestern University, Chicago, Illinois 60611;,
2. Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115;
3. Blantyre Malaria Project, University of Malawi College of Medicine, Blantyre, Malawi
4. Department of Internal Medicine, College of Osteopathic Medicine, Michigan State University, East Lansing, Michigan 48824;