1. 1The Institute of Life Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401 Jerusalem, Israel
2. 2Department of Microbiology & Molecular Genetics, Biomedical Physical Sciences, Michigan State University, East Lansing, MI 48824-4320, USA
3. 3Leibniz Institute – DSMZ Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7b, 38124 Braunschweig, Germany
4. 4Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
5. 5AniCon Labor GmbH, Muehlenstrasse 13, 49685 Hoeltinghausen, Germany
6. 6Clinic for Poultry, University of Veterinary Medicine Hannover, Buenteweg 17, D-30559 Hannover, Germany
7. 7Boehringer Ingelheim Veterinary Research Center, Bemeroder Strasse 31, 30559 Hannover, Germany