Tobing, T. C. L., Ontoseno, T., Rahayuningsih, S., Ganie, R. A., & Siregar, Y. (2021). Relationship between Environmental Factors and Rheumatic Heart Disease. Open Access Macedonian Journal of Medical Sciences, 9(B), 1795–1798. https://doi.org/10.3889/oamjms.2021.7836