[1] Univ Indonesia, Gynaecol Oncol Div, Dept Obstet & Gynecol, Fac Med,Dr Cipto Mangunkusumo Natl Referral Hosp, Jakarta 10430, Indonesia
[2] Univ Indonesia, Fac Med, Dept Obstet & Gynecol, Jakarta 10430, Indonesia
[3] Udayana Univ, Sanglah Gen Hosp, Fac Med, Dept Obstet & Gynecol, Bali 80113, Indonesia