Eka Sihombing and Yeci Theresia Simanjuntak 2023. Factors Related to Use KB Participants are Active in Understanding Contraceptive Devices (IUD) UPT Working Area DPPKB Bandar District, Simalungun Regency. International Journal of Public Health Excellence (IJPHE). 2, 2 (Mar. 2023), 437–440. DOI:https://doi.org/10.55299/ijphe.v2i2.348.