Moegni, F., Department of Obstetrics and Gynecology, Faculty of Medicine Universitas Indonesia, Dr Cipto Mangunkusumo General Hospital, YPK Mandiri Hospital, Jakarta, Indonesia; Chan, N., Department of Obstetrics and Gynecology, YPK Mandiri Hospital, Jakarta, Indonesia; Santoso, B.I., Department of Obstetrics and Gynecology, Faculty of Medicine Universitas Indonesia, Dr Cipto Mangunkusumo General Hospital, YPK Mandiri Hospital, Jakarta, Indonesia; Surya, R., Department of Obstetrics and Gynecology, Faculty of Medicine Universitas Indonesia, Dr Cipto Mangunkusumo General Hospital, YPK Mandiri Hospital, Jakarta, Indonesia; Leonardo, Department of Obstetrics and Gynecology, Faculty of Medicine Universitas Indonesia, Dr Cipto Mangunkusumo General Hospital, YPK Mandiri Hospital, Jakarta, Indonesia