Nuring Pangastuti * Corresponding Author Departemen Obstetri Ginekologi Fakultas Kedokteran Kesehatan Masyarakat dan Keperawatan, Universitas Gadjah Mada Yogyakarta
Santoso Budi Iman Department of Obstetrics Gynecology, Dr Cipto Mangunkusumo Hospital, Jakarta, Indonesia
Agustiningsih Denny Department of Physiology, Faculty of Medicine, Public Health and Nursing, Gadjah Mada University, Yogyakarta, Indonesia
Ova Emilia Department of Obstetrics Gynecology, Dr Sardjito Hospital, Yogyakarta, Indonesia