Kurniawan, Liong Boy, Uleng Bahrun, Fitriani Mangarengi, Darmawati E R, and Mansyur Arif. 2013. “Blood Urea Nitrogen As a Predictor of Mortality in Myocardial Infarction”. Universa Medicina 32 (3):172-78. https://doi.org/10.18051/UnivMed.2013.v32.172-178.