Hamir A N, Moser G, Wampler T, Hattel A, Dietzschold B, Rupprecht C E
Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center, Kennett Square 19348, USA.
Vet Rec. 1996 Feb 3;138(5):114-5. doi: 10.1136/vr.138.5.114.