Community Consortium, San Francisco, California, United States
University of Wisconsin Comprehensive Cancer Center and School of Pharmacy, Madison, Wisconsin, United States
University of Missouri-Columbia, Columbia, Missouri, United States
University of Vermont, Burlington, Vermont, United States
Aids Care Program, Boston, Massachusetts, United States
University of Arizona, Tucson, Arizona, United States
VA San Diego Healthcare System, San Diego, California, United States
Stanford Center for Research in Disease Prevention, Palo Alto, California, United States
Group Health Cooperative, Seattle, Washington, United States
University of Washington Medical Center, Seattle, Washington, United States