1. Department of Primary and Community Care, Radboud University Medical Center, Radboud Institute for Health Sciences, Radboud Alzheimer Center, Nijmegen, The Netherlands
2. De Waalboog ‘Joachim en Anna’, Center for Specialized Geriatric Care, Nijmegen, the Netherlands
3. Faculty of Psychology, Open University of The Netherlands, Heerlen, the Netherlands
4. Department of Psychiatry and Neuropsychology, Alzheimer Centre Limburg, School for Mental Health and Neurosciences, Maastricht University, Maastricht, the Netherlands
5. Groenhuysen, Center for Specialized Geriatric Care, Roosendaal, The Netherlands