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Chambers MA, Williams A, Gavier-Widén D, Whelan A, Hughes C, Hall G, Lever MS, Marsh PD, Hewinson RG.Chambers MA, et al.Vet Microbiol. 2001 Jun 6;80(3):213-26. doi: 10.1016/s0378-1135(00)00378-3.Vet Microbiol. 2001.PMID: 11337137