[1] UCLA, Los Angeles, CA USA
[2] Calif Pacif Med Ctr, San Francisco, CA USA
[3] Kaohsiung Vet Gen Hosp, Dept Obstet & Gynecol, Kaohsiung, Taiwan
[4] Stanford Univ, Dept Radiat Oncol, Sch Med, Stanford, CA USA
[5] Sutter Hlth, Palo Alto, Div Gynecol Oncol, Calif Pacif, San Francisco, CA USA