[1] LENOX HILL HOSP,NEW YORK,NY 10021
[2] PLANNED PARENTHOOD FEDERAT AMER INC,NEW YORK,NY
[3] COLUMBIA HOSP,WASHINGTON,DC
[4] ATLANTA FERTIL INST,ATLANTA,GA 30312
[5] UNIV LOUISVILLE,HLTH SCI CTR,LOUISVILLE,KY 40201
[6] PENN HOSP,DIV AMBULATORY GYNECOL SERV,PHILADELPHIA,PA 19107
[7] CHILDRENS HOSP MED CTR,BOSTON,MA 02115
[8] NORTHWESTERN UNIV,SCH MED,DEPT OBSTET & GYNECOL,CHICAGO,IL 60611