Nathues, H., Chang, Y. M., Wieland, B., Rechter, G., Spergser, J., Rosengarten, R., …Beilage, E. G. (2014). Herd-Level Risk Factors for the Seropositivity to Mycoplasma hyopneumoniae and the Occurrence of Enzootic Pneumonia Among Fattening Pigs in Areas of Endemic Infection and High Pig Density. Transboundary and Emerging Diseases, 61(4), 316-328. https://doi.org/10.1111/tbed.12033