Sudiyono, Sudiyono, Dwi Rochmayanti, and Asri Indah Aryani. 2015. “The Opacity of Kidney in Nephrogram Phase With Different Urea and Creatinine Levels in Patients Who Undergoing Intravenous Pyelography Examination”. LINK 10 (2):799-804. https://doi.org/10.31983/link.v10i2.264.