title: Nonsurgical retrieval of uroliths for mineral analysis.
authors: a      Department of Small Animal Clinical Sciences, College of Veterinary Medicine   ,  University of Minnesota   ,  St. Paul ,  Minnesota ,  55108 ,    USA.
authors: C A
authors: CA
authors: Osborne
authors: J P
authors: JP
authors: Lulich
authors: L K
authors: LK
authors: Unger