1. Network Center for Biomedical Research in Neurodegenerative Diseases (CIBERNED) Institute Carlos III Barcelona Spain
2. Bellvitge Biomedical Research Institute (IDIBELL) Barcelona Spain
3. Department of Neurology University Medical School Göttingen Germany
4. Institute for Epidemiology and Social Medicine University of Münster Münster Germany
5. German Center for Neurodegenerative Diseases (DZNE) Göttingen Germany