1. Institut de Veille Sanitaire (French National Institute for Public Health Surveillance, InVS), Saint Maurice, France
2. Finnish Food Safety Authority Evira, Helsinki, Finland
3. State Provincial Office of Oulu, Finland
4. Environment Office of the Oulu region, Finland
5. Department of Food and Environmental Hygiene, Faculty of Veterinary Medicine, University of Helsinki, Finland
6. National Institute of Health and Welfare, Helsinki, Finland
7. CNR des bactéries anaérobies et du botulisme (National Reference Center for Anaerobic Bacteria and Botulism), Pasteur Institute, Paris, France
8. Direction Générale de l’Alimentation (Ministry for Agriculture), Paris, France
9. Direction départementale des affaires sanitaires et sociales (Departmental Directorate for Health and Social Affairs), Alpes Maritimes, France
10. Saint Roch Hospital, Nice University Hospital Centre, Nice, France
11. L’Archet Hospital, Nice University Hospital Centre, Nice, France