Deeg Dorly J H, Wahl Hans-Werner
VU University Medical Centre/LASA, Van der Boechorststraat, 1081 BT Amsterdam, The Netherlands.
Institute of Psychology, Department of Psychological Ageing Research, University of Heidelberg, Bergheimer Strasse 20, 69115 Heidelberg, Germany.
Eur J Ageing. 2006 Feb 25;3(1):1-2. doi: 10.1007/s10433-006-0023-3. eCollection 2006 Mar.