[1] Kaohsiung Vet Gen Hosp, Dept Obstet & Gynecol, Kaohsiung, Taiwan
[2] Natl Yang Ming Univ, Sch Med, Taipei, Taiwan
[3] Kaohsiung Med Univ, Coll Med, Sch Med, Kaohsiung, Taiwan
[4] Natl Def Med Ctr, Sch Med, Taipei, Taiwan
[5] Kaiser Permanente Santa Clara, Dept Obstet & Gynecol, Santa Clara, CA USA
[6] Univ Calif San Francisco, Dept Obstet Gynecol & Reprod Sci, Helen Diller Family Comprehens Canc Ctr, San Francisco, CA USA
[7] Stanford Univ, Sch Med, Dept Radiat Oncol, Stanford, CA USA
[8] Palo Alto Med Fdn, Res Inst, Div Gynecol Oncol, Palo Alto, CA 94301 USA
[9] Palo Alto Med Fdn, Div Gynecol Oncol, Calif Pacific Med Ctr, Sutter Hlth, San Francisco, CA USA