[1] Univ Texas MD Anderson Canc Ctr, Sect Hlth Serv Res, Dept Biostat, Unit 1411, Houston, TX 77230 USA
[2] Univ Texas MD Anderson Canc Ctr, Dept Gynecol Oncol, Houston, TX 77230 USA
[3] Baylor Coll Med, Dept Pediat, Houston, TX 77030 USA
[4] Baylor Coll Med, Dan L Duncan Canc Ctr, Houston, TX 77030 USA
[5] Univ Texas Houston, Dept Diagnost Sci, Dent Branch, Houston, TX USA
[6] Univ British Columbia, Div Gynecol Oncol, Dept Obstet & Gynaecol, Vancouver, BC V5Z 1M9, Canada
[7] Fox Chase Canc Ctr, Div Populat Sci, Philadelphia, PA 19111 USA