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[2] MASSACHUSETTS PUBL HLTH BIOL LABS,JAMAICA PLAIN,MA 02130
[3] CHILDRENS HOSP MED CTR,DEPT INFECT DIS,BOSTON,MA 02115
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[5] SUNY DOWNSTATE MED CTR,DEPT MICROBIOL & IMMUNOL,BROOKLYN,NY 11203
[6] ROCKEFELLER UNIV,BACTERIOL & IMMUNOL LAB,NEW YORK,NY 10021
[7] NETHERLANDS RED CROSS,BLOOD TRANSFUS SERV,CENT LAB,AMSTERDAM,NETHERLANDS