<k><mods:affiliation>From Westat, Rockville, Maryland; the American Red Cross Blood Services Southeastern Michigan Region, Detroit, Michigan; the Institute for Transfusion Medicine, Pittsburgh, Pennsylvania; Sylvan N. Goldman Center, Oklahoma Blood Institute, Oklahoma City, Oklahoma; the American Red Cross Blood Services, Greater Chesapeake and Potomac Region, Baltimore, Maryland; the American Red Cross Blood Services Southern California Region, Los Angeles, California; the Blood Systems Research Institute, San Francisco, California; the University of California, San Francisco, California; Florida Blood Services, St Petersburg, Florida; the Centers for Disease Control and Prevention, Atlanta, Georgia; and the Division of Blood Diseases & Resources, Blood Resources Branch, National Heart, Lung, and Blood Institute, Bethesda, Maryland.</mods:affiliation>
</k>
