Excerpt: "The diagnosis of IVD disease is common in small animal practice. In data compiled from 20 colleges of veterinary medicine in the United States and Canada by the Veterinary Medical Data Program (VMDP) during the 5-year period of 1977 to 1981, 7304 cases of IVD disease were reported in 600,630 dogs studied (1.2%). Hoerlein reported 8,117 cases of IVD disease in 356,954 dogs studied during a 10-year period by the VMDP (2.3%).(28) During the 1977 to 1981 period at Purdue University, 645 of 16,816 animals were diagnosed as having IVD disease (3.8%)."
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