1. The Laboratory of Haematology, Hospital Timone, University of Marseille, Marseille, France
2. The Dept. of Geriatry, Hospital Nord, University of Marseille, Marseille, France
3. The Dept, of Internal Medicine, Hospital Timone, University of Marseille, Marseille, France
4. The Geriatric Center Allauch, Marseille, France