Jared M Baeten1, Renee Heffron2. 1. Department of Global Health, University of Washington, Seattle, WA 98104, USA; Department of Medicine, University of Washington, Seattle, WA 98104, USA; Department of Epidemiology, University of Washington, Seattle, WA 98104, USA. Electronic address: jbaeten@uw.edu. 2. Department of Global Health, University of Washington, Seattle, WA 98104, USA.