Dadkhah, F., M. R. Safarinejad, E. Amini, M. Soleimani, and A. R. Lashay. “Is Bowel Preparation Necessary Before Kidney-Ureter-Bladder Radiography and Intravenous Urography?”. Urology Journal, vol. 9, no. 3, Aug. 2012, pp. 600-5, doi:10.22037/uj.v9i3.1599.