1 Unit of Geriatrics, Department of Medicine, Campus Bio-Medico di Roma University, Rome, Italy.
2 Department of Internal Medicine and Medical Specialties (DIMI), Università di Genova, Genoa, Italy; IRCSS Ospedale Policlinico San Martino, Genoa, Italy.
3 Department of Internal Medicine and Medical Specialties (DIMI), Università di Genova, Genoa, Italy; IRCSS Ospedale Policlinico San Martino, Genoa, Italy. Electronic address: fiammetta.monacelli@unige.it.