University of Washington, University of Washington, University of Washington, University of Washington, University of Washington, University of Washington, affiliation not provided to SSRN, Tulane National Primate Research Center, University of Washington, University of Washington, Fred Hutchinson Cancer Research Center, Washington National Primate Research Center, University of Washington - Department of Laboratory Medicine and Microbiology, University of Minnesota, Tulane National Primate Research Center, University of Washington, University of Washington and University of Washington