1. Harvard School of Public Health, Boston, Massachusetts.
2. Vanderbilt University School of Medicine, Nashville, Tennessee.
3. Vanderbilt Institute for Global Health (VIGH), Nashville, Tennessee.
4. Botswana-Harvard School of Public Health AIDS Initiative Partnership for HIV Research and Education (BHP), Gaborone, Botswana.
5. Vanderbilt University School of Medicine, Center for Human Genetics Research, Department of Molecular Physiology and Biophysics, Nashville, Tennessee.
6. Laboratory of Genomic Diversity, SAIC-Frederick Inc., National Cancer Institute, Frederick, Maryland.