Short communication: Risk factors associated with Mycobacterium avium ssp. paratuberculosis introduction into dairy herds in Galicia, northwestern Spain

1. Villamil, F.J.
2. Yus, E.
3. Benavides, B.
4. Casal, J.
5. Moya, S.J.
6. Allepuz, A.
7. Diéguez, F.J.