1. Center for Health Equity Research, Social Medicine Department, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
2. Health Policy and Management Department, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
3. Georgia Health Policy Center, Georgia State University, Atlanta, Georgia
4. National Maternal and Child Health Workforce Development Center, Maternal and Child Health Department, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina