1HIV Vaccine Trials Network, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA 2Vaccine and Infectious Disease & Public Health Science Divisions, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA 3Departments of Global Health and Epidemiology, University of Washington, Seattle, WA 98109, USA 4 Infectious Diseases Section, AIDS Program, Yale University School of Medicin...