title: Percutaneous access of nondilated renal collecting systems.
authors.affiliation: Department of Radiology, School of Medicine, University of Colorado, Aurora, Colorado.
authors.forename: Charles E
authors.initials: CE
authors.lastname: Ray
authors.affiliation: Department of Radiology, School of Medicine, University of Colorado, Aurora, Colorado.
authors.forename: Anthony C
authors.initials: AC
authors.lastname: Brown
authors.affiliation: Department of Radiology, School of Medicine, University of Colorado, Aurora, Colorado.
authors.forename: Mitchell T
authors.initials: MT
authors.lastname: Smith
authors.affiliation: Department of Radiology, School of Medicine, University of Colorado, Aurora, Colorado.
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Rochon