1. American Association of Neuromuscular & Electrodiagnostic Medicine Rochester Minnesota USA
2. Department of Neurology Neuromuscular Center, Cleveland Clinic Cleveland Ohio USA
3. Department of Neurology Akron Children's Hospital Akron Ohio USA
4. Department of Neurology, Neuromuscular Division Beth Israel Deaconess Medical Center Boston Ohio USA
5. Department of Neurology Zuyderland Medisch Centrum Sittard‐Geleen The Netherlands
6. Department of Physical Medicine & Rehabilitation University of Florida Gainesville Florida USA
7. Neurological Institute, University Hospitals, Cleveland Medical Center, Case Western Reserve University Cleveland Ohio USA
8. Department of Physical Medicine and Rehabilitation Chicago Medical School North Chicago Illinois USA
9. Michigan Medicine, Ann Arbor VA Health System Ann Arbor Michigan USA
10. Department of Neurology Wake Forest School of Medicine Winston‐Salem North Carolina USA