[1] YESHIVA UNIV ALBERT EINSTEIN COLL MED,DEPT MICROBIOL & IMMUNOL,BRONX,NY 10461
[2] YESHIVA UNIV ALBERT EINSTEIN COLL MED,DEPT CELL BIOL,BRONX,NY 10461
[3] NORTHWESTERN UNIV,SCH MED,CTR CANC,CHICAGO,IL 60611
[4] NIHON UNIV,SHINJUKU KU,TOKYO 101,JAPAN