1. Gillings School of Global Public Health, The University of North Carolina, Chapel Hill, United States
2. Center for Health Equity Research, School of Medicine, The University of North Carolina, Chapel Hill, United States
3. Department of Medicine, School of Medicine, The University of North Carolina, Chapel Hill, United States
4. Abacus Evaluation, School of Medicine, The University of North Carolina, Chapel Hill, United States
5. College of Public Health, University of Nebraska Medical Center, Omaha, United States
6. Department of Social Medicine, School of Medicine, The University of North Carolina, Chapel Hill, United States