1. Faculty of Sustainable Agriculture and Energy Systems University of Applied Sciences Weihenstephan‐Triesdorf Freising Germany
2. Twistaroma Illkirch France
3. CNRS IPHC UMR 7178 University of Strasbourg Strasbourg France
4. Department of Pathology Bavarian Animal Health Services Poing ‐ Grub Germany
5. Institute of Organic Farming Johann Heinrich von Thünen‐Institute Westerau Germany