Antegrade Pyelography, Urodynamic Studies, and Percutaneous Nephrostomy Drainage for Evaluation of Decreased Renal Function in the Renal Allograft Recipient - Zollikofer, Christoph L; Brühlmann, Werner F; Baumgartner, Dieter; Keusch, Gerald (Seminars in Interventional Radiology, 1987)