1. Bundeswehr Institute of Microbiology, Munich, Germany.
2. Austrian Agency for Health and Food Safety, Mîdling, Austria.
3. Centre d'Etudes du Bouchet BP3, Vert le Petit, France.
4. Université Paris Sud-Orsay, Orsay, France.
5. Veterinary Laboratories Agency, Addlestone, United Kingdom.
6. RWTH University of Aachen, Department of Internal Medicine III, Aachen, Germany.
7. Veterinary University of Leipzig, Department of Bacteriology and Mycology, Leipzig, Germany.
8. INRA, UR1282, Infectiologie Animale et Santé Publique, IASP, Nouzilly, France.