1. Department of Neurology and Alzheimer Research CenterUniversity of Groningen, University Medical Center GroningenGroningenThe Netherlands
2. Laboratory of Neurochemistry and Behaviour, Institute Born‐Bunge, University of AntwerpAntwerpBelgium
3. Department of NeurologyHospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de BarcelonaBarcelonaSpain
4. Down Medical Center, Catalan Down Syndrome FoundationBarcelonaSpain