1. Alzheimer Centre Nijmegen,Centre for Quality of Care Research,Radboud
University Medical Centre,PO Box 9101,6500 HB Nijmegen,The Netherlands
2. Alzheimer Centre Amsterdam,VU Medical Centre,PO Box 7057,1007MB
Amsterdam,The Netherlands
3. Alzheimer Centre Nijmegen,Department of Geriatrics,Radboud
University,Nijmegen,The Netherlands