Kloc P A, Scrivani P V, Barr S C, Reese C J, Trotter E J, Forest T W, Pool R
Department of Clinical Sciences, Cornell University College of Veterinary Medicine, Ithaca, NY 14853, USA.
Vet Radiol Ultrasound. 2001 Jan-Feb;42(1):42-5. doi: 10.1111/j.1740-8261.2001.tb00902.x.