1. Reptile, Amphibian and Fish Conservation Netherlands (RAVON), Nijmegen, The Netherlands
2. Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
3. WHO Collaborating Centre for Campylobacter/OIE Reference Laboratory for Campylobacteriosis, Utrecht, The Netherlands
4. Sealcentre, Pieterburen, The Netherlands
5. Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
6. Wageningen Bioveterinary Research, Lelystad, The Netherlands