1. Department of Medical Oncology, Beaujon University Hospital, Assistance Publique-Hôpitaux De Paris (AP-HP), Clichy, France;
2. Department of Medical Oncology, Saint-Antoine Hospital, Assistance Publique-Hôpitaux De Paris (AP-HP), Paris, France;
3. Department of Gastroenterology and Pancreatology, Beaujon University Hospital, Assistance Publique-Hôpitaux De Paris (AP-HP), Clichy, France;
4. Institut Hospitalier Franco-Britannique, Levallois-Perret, France