1. Hopital Tenon, Paris, France
2. Department of Gastro Enterology, Beaujon University Hospital, Clichy, France
3. CHRU Besançon, Besançon, France
4. Prince of Wales Hospital, Sydney, Australia
5. Erasme University Hospital, Brussels, Belgium
6. Akademiska University Hospital, Uppsala, Sweden
7. Sir Charles Gairdner Hospital, Perth, Australia
8. Department of Statistical University Hospital of Besancon, Besancon, France
9. CHRU of Besançon, Besançon, France
10. Department of Oncology, Institut Mutualiste Montsouris, Paris, France