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Nathues, Christina; Janssen, Eltje; Duengelhoef, Andrea; Nathues, Heiko; Grosse Beilage, Elisabeth (2018). Cross-sectional study on risk factors for Porcine Reproductive and Respiratory Syndrome virus sow herd instability in German breeding herds. Acta Veterinaria Scandinavica, 60(1), p. 57. BioMed Central Ltd. 10.1186/s13028-018-0411-7
