1. Department of Gastroenterology and Hepatology, CHU UCL Namur, Université catholique de Louvain, Yvoir, Belgium
2. Department of Pulmonology, CHU UCL Namur, Université catholique de Louvain, Yvoir, Belgium
3. Department of Vascular and Thoracic Surgery, CHU UCL Namur, Université catholique de Louvain, Yvoir, Belgium
4. Department of Gastroenterology and Hepatology, Cliniques universitaires Saint-Luc, UCLouvain, Bruxelles, Belgium
5. Department of Anatomical Pathology, Centre Hospitalier de Liège, Université de Liège, Liège, Belgium
6. Department of Anesthesiology, CHU UCL Namur, Université catholique de Louvain, Yvoir, Belgium
7. Department of Pathological Anatomy, CHU UCL Namur, Université catholique de Louvain, Yvoir, Belgium