1. Small Animal Clinic, Veterinary Faculty, Justus-Liebig-University, Giessen, Germany
2. Institute of Hygiene and Infectious Diseases of Animals, Justus-Liebig-University, Giessen, Germany
3. Tierdermatologie Dr. Wildermuth, Wiesbaden, Germany
4. Friedrich-Loeffler-Institut, National Reference Laboratory for Bovine Tuberculosis, Institute of Molecular Pathogenesis, Jena, Germany
5. National Reference Laboratory for Mycobacteria, Research Center Borstel, Borstel, Germany
6. Institute for Veterinary Pathology, Justus-Liebig-University, Giessen, Germany