[1] Med Univ S Carolina, Dept Obstet & Gynecol, Div Gynecol Oncol, Charleston, SC 29425 USA
[2] Univ Texas MD Anderson Canc Ctr, Dept Gynecol Oncol & Reprod Med, Houston, TX 77030 USA
[3] Univ Texas MD Anderson Canc Ctr, Dept Canc Biol, Houston, TX 77030 USA
[4] Creighton Univ, Div Gynecol Oncol, Dept Obstet & Gynecol, Phoenix, AZ USA