Agustina, Eva, and Fariani Syahrul. “The Effect of Operating Procedure With Infection Incidence on Contaminated Cleaning Operating Patients (Case Control Study in RSU HAJI Surabaya)”. Jurnal Berkala Epidemiologi 5, no. 3 (December 22, 2017): 351–360. Accessed May 19, 2025. https://e-journal.unair.ac.id/JBE/article/view/5440.