Kotb, A. F., A. Elabbady, K. Mohamed, and M. A. Atta. “Percutaneous Silicon Catheter Insertion into the IVC, Following Percutaneous Nephrostomy (PCN) Exchange”. Canadian Urological Association Journal, vol. 7, no. 7-8, July 2013, pp. E505-7, doi:10.5489/cuaj.1403.