1. From the American Red Cross, Scientific Affairs, Gaithersburg, MD (P.S., M.P., G.F., D.K., C.W., R.Y.D., S.L.S.); Grifols Diagnostic Solutions, San Diego, CA (J.M.L., K.G.); Quality Analytics, Riverwoods, IL (J.P.B.); and Wadsworth Center, New York State Department of Health, Albany (R.J.L.).