1. Sheffield Institute for Translational Neuroscience University of Sheffield Sheffield UK
2. Neuromuscular Diseases Unit/ALS Clinic Kantonsspital St. Gallen Switzerland
3. Medical College of Wisconsin Milwaukee Wisconsin USA
4. Department of Neurosciences Centro Hospitalar Lisboa Norte–Hospital de Santa Maria, Instituto de Medicina Molecular, Faculty of Medicine, University of Lisbon Lisboa Portugal
5. Natus Medical, Inc Hopewell Junction New York USA
6. Department of Neuroscience, Clinical Neurophysiology Uppsala University Uppsala Sweden