aDepartment of Clinical Neuropsychology, VU-University, van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands
bCollege of Nursing, The University of Iowa, Iowa City, IA 52242, USA
cCHU Clermont-Ferrand, Clinical Pharmacology Centre, University Hospital, Clermont-Ferrand, France
dNational Ageing Research Institute, P.O. Box 31, Parkville, Vic. 3052, Australia
eDepartment of Neuroscience, University of Turin Medical School and National Institute of Neuroscience, Turin, Italy
fPhysiological Psychology, University of Bamberg, Markusplatz 3, Bamberg 96045, Germany
*Corresponding author. Tel.: +31 20 5988761; fax: +31 20 5988971.
Received January 15, 2009; Received in revised form March 24, 2009; Accepted April 13, 2009.