Nuring Pangastuti
* Corresponding Author Departemen Obstetri Ginekologi Fakultas Kedokteran Kesehatan Masyarakat dan Keperawatan, Universitas Gadjah Mada Yogyakarta
Budi Iman Santoso Department of Obstetrics Gynecology, Dr Cipto Mangunkusumo Hospital, Jakarta, Indonesia
Denny Agustiningsih 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