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Primary cholangiohepatitis in a horse.
Schulz KS, Simmons TR, Johnson R. Schulz KS, et al. Among authors: johnson r. Cornell Vet. 1990 Jan;80(1):35-40. Cornell Vet. 1990. PMID: 2293563 Free article.
Leptospirosis.
Heath SE, Johnson R. Heath SE, et al. Among authors: johnson r. J Am Vet Med Assoc. 1994 Dec 1;205(11):1518-23. J Am Vet Med Assoc. 1994. PMID: 7730115 Review. No abstract available.
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