1. Department of Family Medicine and Community Health Duke University School of Medicine Durham North Carolina USA
2. Duke Global Health Institute Durham North Carolina USA
3. Hubert Department of Global Health Rollins School of Public Health, Emory University Atlanta Georgia USA
4. Department of Biostatistics and Bioinformatics Duke University School of Medicine Durham North Carolina USA
5. Department of Obstetrics and Gynecology Duke University School of Medicine Durham North Carolina USA