1. Department of Primary and Community Care, Radboud University Medical Center, Nijmegen, the Netherlands
2. Radboudumc Alzheimer Center, Nijmegen, the Netherlands
3. Department of Public Health and Primary Care, Leiden University Medical Center, Leiden, the Netherlands
4. School for Mental Health and Neuroscience, Alzheimer Center Limburg, Maastricht University Medical Center, Maastricht, the Netherlands
5. Groenhuysen, Center for Geriatric Care, Roosendaal, the Netherlands
6. Joachim en Anna, Center for Specialized Geriatric Care, Nijmegen, the Netherlands