1. University of California San Diego; La Jolla CA USA
2. Mayo Clinic; Rochester Minnesota USA
3. University of Rome; Dipartimento di Medicina Interna e Specialità Mediche; Viale del Policlinico, 155 Rome Italy 00161
4. Robarts Clinical Trials Inc; San Diego California USA
5. CHU de Nancy; Service d'Hepatogastroenterologie; Allee du Morvan Vandoeuvre-les-Nancy France F-54511
6. Robarts Research Institute; Robarts Clinical Trials; P.O. Box 5015 100 Perth Drive London ON Canada N6A 5K8
7. University of Barcelona; Hospital Clinic; Villaroel 170 Barcelona Spain 08036
8. University of California San Diego; Division of Gastroenterology; La Jolla California USA
9. University of California San Diego; 200 West Arbor Dr, #8756 San Diego CA USA 92103
10. Academic Medical Center; Meibergdreef 9 - C2-112 Amsterdam Netherlands 1105 AZ
11. AMC Amsterdam; Amsterdam Netherlands