Haider, Z., R. Bacha, S. S. Malik, M. Fatima, N. Rasheed, and S. Rehman. “Comparison Between Resistivity Index of Renal Artery in Normal Kidney and Calculi Obstructed Kidney”. Asian Journal of Allied Health Sciences (AJAHS), Vol. 2, no. 1, Aug. 2020, pp. 23-26, doi:10.52229/ajahs.v2i1.286.