1. Institute of Microbiology and Epizootics, Freie Universität Berlin, Berlin, Germany
2. Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
3. Clinic for Swine, Small Ruminants, Forensic Medicine and Ambulatory Services, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
4. Vet-Team Reken, Reken, Germany
5. Institute for Biometry, Epidemiology and Information Processing, WHO Collaborating Centre for Research and Training for Health at the Human-Animal-Environment Interface, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
6. Dairy Herd Consulting and Research Company (MBFG), Wunstorf, Germany