[1] NEW YORK BLOOD CTR,SPECIAL DIAGNOST LAB,NEW YORK,NY 10021
[2] SACRAMENTO MED FDN CTR BLOOD RES,SACRAMENTO,CA
[3] AMER RED CROSS,TISSUE SERV,LOS ANGELES,CA
[4] CTR DIS CONTROL,NATL CTR INFECT DIS,DIV HIV AIDS,HIV SEROEPIDEMIOL BRANCH,ATLANTA,GA 30333
[5] UNIV CALIF SAN FRANCISCO,DEPT LAB MED,SAN FRANCISCO,CA 94143
[6] AMER RED CROSS,BLOOD SERV,LOS ANGELES,CA
[7] UNIV SO CALIF,SCH MED,LOS ANGELES,CA 90033
[8] PUGET SOUND BLOOD CTR,SEATTLE,WA 98104
[9] NHLBI,BETHESDA,MD 20892
[10] UNIV CALIF SAN FRANCISCO,SAN FRANCISCO GEN HOSP,SCH MED,DEPT EPIDEMIOL & BIOSTAT,SAN FRANCISCO,CA 94110