1. Institute of Diagnostic Virology Friedrich‐Loeffler‐Institut Greifswald – Insel Riems Germany
2. Institute of Veterinary‐Pathology Leipzig University Leipzig Germany
3. Department of Experimental Animal Facilities and Biorisk Management Friedrich‐Loeffler‐Institut Greifswald – Insel Riems Germany
4. Clinic for Poultry University of Veterinary Medicine Hannover Hannover Germany