aDepartment of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna, Bologna

bDepartment of Primary Healthcare, Internal Medicine Unit addressed to Frailty and Aging, S. Maria delle Croci Hospital, AUSL Romagna, Ravenna

cDepartment of Internal Medicine, Degli Infermi Hospital, AUSL Romagna, Faenza, Italy

Correspondence to Dr Giorgio Bedogni, Department of Primary Healthcare, Internal Medicine Unit addressed to Frailty and Aging, Santa Maria delle Croci Hospital, AUSL Romagna, Viale Randi 5, 48121 Ravenna, Italy. Tel: +39 0544 285273; e-mail: [email protected]