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Blissitt KJ, Young LE, Jones RS, Darke PG, Utting J.Blissitt KJ, et al.Equine Vet J. 1997 Jan;29(1):18-25. doi: 10.1111/j.2042-3306.1997.tb01631.x.Equine Vet J. 1997.PMID: 9031859