1. Department of Epidemiology; UNC Gillings School of Global Public Health; Chapel Hill NC
2. UNC School of Medicine; Chapel Hill NC
3. Department of Maternal and Child Health; UNC Gillings School of Global Public Health; Chapel Hill NC
4. Department of Health Behavior; UNC Gillings School of Global Public Health; Chapel Hill NC
5. Department of Epidemiology; Rollins School of Public Health, Emory University; Atlanta GA
6. Business & Decision Life Science on behalf of GlaxoSmithKline Vaccines; Wavre Belgium
7. Lineberger Comprehensive Cancer Center, University of North Carolina; Chapel Hill NC