1. University Eye Clinic Maastricht, School of Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht
2. Department of Psychiatry and Neuropsychology, Alzheimer Center Limburg, , School of Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht
3. Alzheimer Center Amsterdam, Department of Neurology, Amsterdam University Medical Center, Amsterdam
4. Ophthalmology Department, Amsterdam UMC, location VUmc, Amsterdam