1. Department of Biology, Centre Hospitalier de Dourdan, 91415 Dourdan, France
2. Department of Biology, Centre Hospitalier de Rambouillet, 78514 Rambouillet, France
3. National Reference Center for Helicobacter and Campylobacter, Department of Microbiology, Hôpital Pellegrin, Bordeaux, France
4. Intensive Care Unit, Centre Hospitalier de Dourdan, 91415 Dourdan, France
5. Intensive Care Unit, Centre Hospitalier de Rambouillet, 78514 Rambouillet, France