R. Siswosudarmo, N. . Nugroho, C. Kurniawan, Y. Erlina, and D. Ikarumi, “ CuT 380A IUD Inserted by R-Inserter and Ring Forceps during Postpartum Period A Randomized Clinical Trial, Twelve Months Follow Up: IUD CuT380A yang Dipasang dengan R-inserter dan Klem Cincin pada Masa Pascasalin Uji Klinis secara Random, Pengamatan Dua Belas Bulan”, Indones J Obstet Gynecol, vol. 8, no. 1, pp. 14–18, Jan. 2020.