[1] UCL, Dept Primary Care & Populat Hlth, Rowland Hill St, London NW3 2PF, England
[2] Univ Lorraine, CHRU Nancy, Pole Malad Vieillissement Gerontol & Soins Pallia, F-54000 Nancy, France
[3] Aristotle Univ Thessaloniki, Lab Primary Hlth Care, Gen Practice & Hlth Serv Res, Thessaloniki, Greece
[4] Avdira Hlth Ctr, Abdera, Xanthi, Greece
[5] Farkadona Hlth Ctr, Farkadona, Trikala, Greece
[6] 1st TOMY Serron, Serres, Greece
[7] Rodolivos Hlth Ctr, Rodolivos, Serres, Greece
[8] Henry Dunant Hosp Ctr, Outpatient Geriatr Assessment Unit, Athens, Greece