1. Farm Animal Clinic, Division for Ruminants and Camelids, Unit for Internal Medicine and Surgery, School of Veterinary Medicine, Freie Universität Berlin, 14163 Berlin, Germany
2. School of Veterinary Medicine, Institute of Veterinary Epidemiology and Biostatistics, Freie Universität Berlin, 14163 Berlin, Germany
3. Clinic for Cattle, Clinical Centre for Farm Animals, University of Veterinary Medicine Foundation, 30173 Hannover, Germany
4. Clinic for Ruminants with Ambulatory and Herd Health Services, Ludwig-Maximilians University Munich, 85764 Munich, Germany
5. Zoetis Deutschland GmbH, 10785 Berlin, Germany