[1] Blood Syst Lab, HLA Lab, Tempe, AZ USA
[2] Westat Corp, Rockville, MD USA
[3] Inst Transfus Med, Pittsburgh, PA USA
[4] NHLBI, DBDR TMCT, Bethesda, MD 20892 USA
[5] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
[6] Blood Syst Res Inst, San Francisco, CA USA
[7] Univ Calif San Francisco, San Francisco, CA 94143 USA
[8] LifeSource Blood Svcs, Glenview IL, San Francisco, CA USA