Pola karakteristik pasien abortus berulang di Poliklinik Kebidanan RSUPN Dr. Cipto Mangunkusumo tahun 2013-2017 = Characteristic pattern of recurrent pregnancy loss patients in polyclinic central National Public Hospital Dr. Cipto Mangunkusumo in 2013-2017 - Muhamad Reza Tiansah, author (2018)