1. Geriatrics Department, Poitiers University Hospital, 86000 Poitiers, France
2. ProDiCeT, CHU Poitiers, Université de Poitiers, 86000 Poitiers, France
3. Gastroenterology and Hepatology Department, Poitiers University Hospital, 86000 Poitiers, France
4. University Hospital Poitiers, University of Poitiers, INSERM CIC 1402, 2 rue de la Milétrie, CEDEX, 86021 Poitiers, France