1. Acute Geriatrics Unit; School of Medicine and Surgery, University of Milano-Bicocca; Monza Italy
2. Clinical Neurosciences Research Area; NeuroMI - Milan Center for Neuroscience; Milan Italy
3. Acute Geriatrics Unit, Department of Medicine; Sondrio Hospital, ASST of Valtellina and Alto Lario; Sondrio Italy
4. Department of Bone Diseases; Geneva University Hospital; Geneva Switzerland
5. Neuroscience and Mental Health Institute, University of Alberta; Edmonton Canada