1. Division of Gastroenterology, McGill University Health Center, 1650 Cedar Avenue, C7-200, Montreal, QC, Canada H3G 1A4
2. Technology Assessment Unit, McGill University Health Center, 687 Pine Avenue West, Room R4.09, Montreal, QC, Canada H3A 1A1
3. Unite de Pharmacologie Clinique, Centre Hospitalier Universitaire de Sainte-Justine, 3175 Chemin de la Côte-Sainte-Catherine, Montreal, QC, Canada H3T 1C4