Tjahjanto, Hary, and Wijoyo Hadiningrat. “Modification of Immediate Postplacenta CuT-380A IUD Insertion Using Ring Forceps and Standard Inserter: Twelve Months Follow-up”. Indonesian Journal of Obstetrics and Gynecology, vol. 3, no. 2, Apr. 2015, pp. 85-93, doi:10.32771/inajog.v3i2.33.