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Birnbaum N, Barr SC, Center SA, Schermerhorn T, Randolph JF, Simpson KW.Birnbaum N, et al. Among authors: barr sc.J Small Anim Pract. 1998 May;39(5):231-6. doi: 10.1111/j.1748-5827.1998.tb03640.x.J Small Anim Pract. 1998.PMID: 9631358
Jennings M, Center SA, Barr SC, Brandes D.Jennings M, et al. Among authors: barr sc.J Am Anim Hosp Assoc. 2001 Mar-Apr;37(2):145-52. doi: 10.5326/15473317-37-2-145.J Am Anim Hosp Assoc. 2001.PMID: 11300521