1. Gastroenterology Department, Saint Louis Hospital, APHP, Université Paris Cité, 1 Avenue Claude Vellefaux, Paris 75475, France
2. Department of Digestive Surgery, Saint Louis Hospital, APHP, Université Paris Cité, Paris, France
3. Paris Nord Oncogeriatrics Coordination Unit, Bretonneau Hospital, APHP, Paris, France
4. Geriatric Out-Patient Unit, Bretonneau Hospital, APHP, Paris, France
5. Digestive and Medical Oncology Department, Paul Brousse Hospital, APHP, Paris-Saclay University, Villejuif, France