1. Division of Neurology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
2. Department of Neurology, Rehabilitation Medicine, Memory and Geriatrics, Skåne University Hospital, Lund, Sweden
3. Department of Neurology, University of Rostock, Rostock, Germany
4. German Center for Neurodegenerative Diseases (DZNE) Rostock-Greifswald, Rostock, Germany