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Costello M, Papasouliotis K, Barr FJ, Gruffydd-Jones TJ, Caney SM.Costello M, et al. Among authors: barr fj.Am J Vet Res. 1999 Oct;60(10):1222-6.Am J Vet Res. 1999.PMID: 10791934
Cannon M, Barr F, Gruffydd-Jones T, Gunn-Moore D.Cannon M, et al.Vet Rec. 2000 Nov 25;147(22):639-40.Vet Rec. 2000.PMID: 11128083No abstract available.