2 Department of Neurology, Alfried Krupp Hospital, Essen, Germany.
3 Department of Neurology, Hannover Medical School, Hannover, Germany.
4 Charité University Hospital, Humboldt-University, Berlin, Germany.
5 Department of Neurology, Jena University Hospital, Jena, Germany.
6 Department for Neurodegenerative Disorders and Gerontopsychiatry, Bonn University, Bonn, Germany.
7 Kantonsspital St. Gallen, ALS Outpatient Clinic, St. Gallen, Switzerland.
8 Department of Neurosciences and Mental Health, Hospital de Santa Maria-CHLN, Lisbon, Portugal.
9 Department of Pharmacology and Clinical Neuroscience, Umeå University, Umeå, Sweden.
10 Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany.
11 Department of Neurology, RWTH Aachen University Hospital, Aachen, Germany.
12 Department of Neurology, University Hospitals Leuven, Leuven, Belgium.
13 Laboratory for Muscle Diseases and Neuropathies, Department of Neurosciences, Experimental Neurology, KU Leuven, University of Leuven, Leuven, Belgium.
14 Department of Neurology, DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany.
15 Department of Neurology Martin-Luther-University Halle-Wittenberg, Halle/Saale, Germany.
16 Department of Neurology, University of Würzburg, Würzburg, Germany.
17 Institute of Human Genetics, Ulm University, Ulm, Germany.
18 Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
19 Institute of Clinical Neurobiology, University Hospital of Würzburg, Würzburg, Germany.
20 Department of Neurology with Friedrich-Baur-Institute, University of Munich, Munich, Germany.
21 German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.
22 Munich Cluster for Systems Neurology (SyNergy), Munich, Germany.
23 Instituto de Medicina Molecular and Institute of Physiology, Faculty of Medicine, University of Lisbon, Portugal.
24 SyNergy, Munich Cluster for Systems Neurology, Ludwig Maximilians Universität München, Germany.
25 Institute of Human Genetics, Technische Universität München, München, Germany.