A survey of visitors on Swedish livestock farms with reference to the spread of animal diseases.

BMC Vet Res · 2013 · PMC3848732 · PMID 24040830

Europe PMC DOI

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may be significantno p-value reported

Even if only a small proportion of these visitors are in contact with other farms, the actual number may be significant when the total number of visitors is high.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.