JOSEPH TELFAIR is associate professor in the Department of Maternal and Child Health, School of Public Health, and director, Division of Social, Health Services and Community-Based Research within the Comprehensive Sickle Cell Center, School of Medicine, at the University of Alabama at Birmingham. LAURA C. LEVITON was professor in the Department of Health Behavior, School of Public Health, University of Alabama at Birmingham and is now senior program officer for research and evaluation at the Robert Wood Johnson Foundation. JEANNE S. MERCHANT is project coordinator in the Department of Maternal and Child Health, School of Public Health, University of Alabama at Birmingham.