1. Department of Surgery, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
2. Department of Gastroenterology-Hepatology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
3. Department of Advanced Interventional Endoscopy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium