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Rivers BJ, Walter PA, O'Brien TD, King VL, Polzin DJ.Rivers BJ, et al. Among authors: walter pa.J Am Anim Hosp Assoc. 1996 Jul-Aug;32(4):323-36. doi: 10.5326/15473317-32-4-323.J Am Anim Hosp Assoc. 1996.PMID: 8784723
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