aCentro Medicina dell’Invecchiamento, Università Cattolica Sacro Cuore, Dipartimento di Scienze Gerontologiche, Geriatriche e Fisiatriche, Largo F. Vito 1, 00168 Rome, Italy
bAGAPLESION Bethesda Clinic, Competence Center of Geriatrics and Aging Research, University of Ulm, Zollernring 26, D-89073 Ulm, Germany
cEMGO Institute for Health and Care Research, Department of Nursing Home Medicine, VU University Medical Center, Van der Boechorststraat 7, 1081 BT Amsterdam, The Netherlands
dAgeing and Services Unit, National Institute for Health and Welfare, P.O. Box 30, FI-00271 Helsinki, Finland
*Corresponding author. Tel.: +39 06 30154341; fax: +39 06 3051911.
E-mail: [email protected]
1For the SHELTER Project.
E-mail: [email protected]
Submitted June 24, 2011; revised September 1, 2011; accepted October 4, 2011.