1. Clinic for Ruminants, Vetsuisse-Faculty, University of Bern, 3012 Bern, Switzerland
2. Veterinary Public Health Institute, Vetsuisse-Faculty, University of Bern, 3012 Bern, Switzerland
3. Centre for Proper Housing of Ruminants and Pigs, Federal Food Safety and Veterinary Office, Agroscope, 8356 Tänikon, Switzerland
4. Consulting and Health Service for Small Ruminants, 3362 Niederönz, Switzerland