1. National Center for Primary Care, Morehouse School of Medicine, Atlanta, Georgia
2. Department of Community Health and Preventive Medicine, Morehouse School of Medicine, Atlanta, Georgia
3. Geography and Urban Studies, Temple University, Philadelphia, Pennsylvania
4. Department of Behavioral Sciences and Social Medicine, Florida State University School of Medicine, Tallahassee, Florida
5. Department of Family and Community Medicine, Baylor College of Medicine, Houston, Texas
6. Department of Family Medicine, Morehouse School of Medicine, Atlanta, Georgia