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. 2018 Jul 21;181:104494. doi: 10.1016/j.prevetmed.2018.07.002

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Fig. 1 — Flow-chart outlining the study sample and subsets of herds included in different calculations in a study estimating the probability of freedom from BRSV- and BCV antibodies in dairy herds located in two counties in western Norway during the period January 2013–March 2016.