Erwina, B.P. and Ismah, Z. 2024. Association between extramarital sexual activity, number of sexual partners, and HIV incidence among productive-age adults at H. Adam Malik general hospital, Medan. Sains Medika: Jurnal Kedokteran dan Kesehatan. 15, 2 (Dec. 2024), 78–82. DOI:https://doi.org/10.30659/sainsmed.v15i2.33191.