1. Department of Geriatric Care, Orthogeriatrics and Rehabilitation; Frailty Area; E.O. Galliera Hospital of National Relevance and High Specialization; Genova Italy
2. Azienda Unità Locale Socio Sanitaria 16 Padova; S. Antonio Hospital; Padova Italy
3. Unit of Biostatistics; Istituto di Ricovero e Cura a Carattere Scientifico Casa Sollievo della Sofferenza; San Giovanni Rotondo Foggia Italy
4. Clinic of Neurology; University of Brescia; Brescia Italy
5. Neurodegenerative Disease Unit; Department of Basic Medicine, Neuroscience, and Sense Organs; University of Bari Aldo Moro; Bari Italy
6. Department of Clinical Research in Neurology; University of Bari Aldo Moro; Lecce Italy
7. National Institute on Aging; Baltimore Maryland