[1] ALBANY REG CANC CTR, ALBANY, NY USA
[2] NEW YORK STATE DEPT HLTH, ROSWELL PK MEM INST, GYNECOL ONCOL GRP, BUFFALO, NY 14263 USA
[3] UNIV ALABAMA, DIV GYNECOL ONCOL, BIRMINGHAM, AL USA
[4] JOHNS HOPKINS UNIV HOSP, CTR ONCOL, BALTIMORE, MD 21205 USA
[5] UNIV CALIF IRVINE, IRVINE CANC CTR, DEPT OBSTET & GYNECOL, ORANGE, CA 92668 USA
[6] EASTERN VIRGINIA MED SCH, DEPT OBSTET & GYNECOL, NORFOLK, VA 23501 USA
[7] STANFORD UNIV, MED CTR, SCH MED, DEPT OBSTET & GYNECOL, STANFORD, CA 94305 USA
[8] MED UNIV S CAROLINA, DEPT OBSTET & GYNECOL, CHARLESTON, SC 29425 USA