1. Department of Neurology Medical University of Innsbruck Innsbruck Austria
2. Neurology Unit, Department of Clinical and Experimental Medicine University of Pisa Pisa Italy
3. Department of Medical Statistics, Informatics and Health Economics Medical University of Innsbruck Innsbruck Austria
4. Department of Clinical Genetics University Medical Center Rotterdam The Netherlands
5. Institute of Human Genetics Medical University of Innsbruck Innsbruck Austria