[1] MCGILL UNIV,DEPT PATHOL,MONTREAL 101,QUEBEC,CANADA
[2] JEWISH GEN HOSP,CYTOL LAB,MONTREAL,QUEBEC,CANADA
[3] JEWISH GEN HOSP,GYNECOL PATHOL,MONTREAL,QUEBEC,CANADA
[4] COLUMBIA UNIV, COLL PHYS & SURG,DEPT PATHOL,DIV OBSTET & GYNECOL PATHOL,NEW YORK,NY 10032
[5] PRESBYTERIAN HOSP,CYTOL LAB,NEW YORK,NY 10032