1. Institute for Veterinary Food Science, Faculty of Veterinary Medicine, Justus Liebig University Giessen, Giessen, Germany
2. Clinic for Poultry, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
3. Royal GD, Deventer, The Netherlands
4. Institute of Preventive Veterinary Science, Zhejiang University College of Animal Sciences, Hangzhou, China
5. Department of Veterinary Medicine, Zhejiang University College of Animal Sciences, Hangzhou, China
6. Hainan Institute of Zhejiang University, Sanya, China