[1] YESHIVA UNIV ALBERT EINSTEIN COLL MED,DEPT PATHOL,BRONX,NY 10461
[2] YESHIVA UNIV ALBERT EINSTEIN COLL MED,DEPT NEUROSCI,BRONX,NY 10461
[3] HARVARD UNIV,SCH MED,DEPT MICROBIOL & MOLEC GENET,BOSTON,MA 02115
[4] BRIGHAM & WOMENS HOSP,DIV INFECT DIS,BOSTON,MA 02115