Authors:
Penny Lawlis 1Campbell Centre for the Study of Animal Welfare (CSSAW)/Professional Livestock Auditing Inc., 349 Vesta Road, N5Y1E9, Canada

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Eva Sanz-Sole 2NSF International, Agriculture, 125 Chancellors Way, Guelph, ON N1G 0E7, Canada

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Charlotte Berg 3Swedish University of Agricultural Sciences, Department of Animal Environment and Health, P.O. Box 234, 532 23, Skara, Gråbrödragatan 19, Sweden; esanzsole@nsf.org

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