[1] Univ Aberdeen, Sch Med & Dent, Ageing Clin & Expt Res Grp, Aberdeen, Scotland
[2] NHS Grampian, Dept Geriatr Med, Aberdeen, Scotland
[3] IRCCS INRCA, Geriatria Accettaz Geriatr & Ctr Ric Invecchiamen, Ancona, Italy
[4] Hosp Univ Ramon y Cajal IRYCIS, Madrid, Spain
[5] Univ Coll Cork, Cork, Ireland