- Correspondence to: Dr Marianne van Iersel Department of Geriatrics, Radboud University Nijmegen Medical Centre, Internal Code 931, PO Box 9101, 6500 HB Nijmegen, The Netherlands;
- Received November 16, 2005
- Accepted March 2, 2006
- Revised February 19, 2006
- First published June 20, 2006.
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