1. Department of Geriatrics; Poitiers University Hospital; Poitiers France
2. INSERM, CIC-P 1402, Poitiers University Hospital; University of Poitiers; Poitiers France
3. Department of Geriatrics; Saintes Hospital; Saintes France
4. Department of Analytical Chemistry, Pharmaceutics and Epidemiology; University of Poitiers; Poitiers France
5. Department of Medical Oncology; Poitiers University Hospital; Poitiers France