1 Geriatric Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Via Alfonso Lamarmora 5, 20122, Milan, Italy. carlo.abbate@guest.unimi.it.
2 Fondazione IRCCS Don Carlo Gnocchi, S. Maria Nascente, Milan, Italy.
3 Geriatric Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Via Alfonso Lamarmora 5, 20122, Milan, Italy.
4 Department of Medical Sciences and Community Health, University of Milan, Milan, Italy.