Department of Obstetrics and Gynecology, Faculty of Medicine, University of Indonesia, Jl. Salemba Raya No. 6, Jakarta Pusat, Jakarta, 10430, Indonesia
Gunardi, E.R., Department of Obstetrics and Gynecology, Faculty of Medicine, University of Indonesia, Jl. Salemba Raya No. 6, Jakarta Pusat, Jakarta, 10430, Indonesia; Susilo, S.A., Department of Obstetrics and Gynecology, Faculty of Medicine, University of Indonesia, Jl. Salemba Raya No. 6, Jakarta Pusat, Jakarta, 10430, Indonesia