Rintani, Aderia, Tita Mintarsih, Yosef Muhammad RBM, Juli Sapitri Siregar, and Adhy Prasetyo Widodo. 2018. “Risk Factors Associated to Diphtheria Outbreak In Developing Countries”. Jurnal Ilmu Kesehatan Masyarakat 9 (2):83-95. https://doi.org/10.26553/jikm.2018.9.2.83-95.