1. Department of Gastroenterology and Hepatology, Université catholique de Louvain, Cliniques universitaires Saint-Luc, Brussels, Belgium
2. Department of Anesthesiology, Université catholique de Louvain, Cliniques universitaires Saint-Luc, Brussels, Belgium
3. Department of Digestive Surgery, Université catholique de Louvain, Cliniques universitaires Saint-Luc, Brussels, Belgium