1. MEM SLOAN KETTERING CANC CTR,LUDWIG INST CANC RES,NEW YORK,NY 10021. MEM SLOAN KETTERING CANC CTR,DEPT PATHOL,NEW YORK,NY 10021. MEM SLOAN KETTERING CANC CTR,PROGRAM IMMUNOL,NEW YORK,NY 10021. UNIV SOUTHAMPTON,DEPT OBSTET & GYNAECOL,SOUTHAMPTON SO16 5YA,HANTS,ENGLAND.