[1] Univ Calif Irvine, Dept Gynecol Oncol, Irvine, CA USA
[2] Univ Calif Irvine, Dept Obstet & Gynecol, Irvine, CA 92717 USA
[3] Univ Calif Irvine, Dept Pathol & Lab Med, Irvine, CA 92717 USA
[4] Univ N Carolina, Dept Obstet & Gynecol, Chapel Hill, NC USA
[5] Creighton Univ, Sch Med, St Josephs Hosp, Div Gynecol Oncol Obstet & Gynecol, Phoenix, AZ 85013 USA
[6] Med Ctr, Phoenix, AZ USA