[1] Charite Univ Med Berlin, Dept Neurol, Berlin, Germany
[2] Charite Univ Med Berlin, NeuroCure Clin Res Ctr, Berlin, Germany
[3] Univ Hlth Network, Ellen & Martin Prosserman Ctr Neuromuscular Dis, Toronto, ON, Canada
[4] Univ Toronto, Toronto, ON, Canada
[5] Univ S Florida, Dept Neurol, Morsani Coll Med, Tampa, FL USA
[6] Univ Penn, Penn Neurosci Ctr, Philadelphia, PA USA
[7] Univ Belgrade, Univ Clin Ctr Serbia, Neurol Clin, Belgrade, Serbia
[8] Ghent Univ Hosp, Ghent, Belgium
[9] Int Univ Hlth & Welf, Sch Med, Dept Neurol, Tokyo, Japan
[10] Univ Southern Calif, Keck Sch Med, Los Angeles, CA 90007 USA
[11] Univ Kansas, Med Ctr, Kansas City, KS 66103 USA
[12] Argenx, Ghent, Belgium
[13] Hanamaki Gen Hosp, Dept Neurol, Hanamaki, Japan
[14] Leiden Univ, Dept Neurol, Med Ctr, Leiden, Netherlands
[15] Fdn IRCCS Ist Neurol Carlo Besta, Dept Neuroimmunol & Neuromuscular Dis, Milan, Italy
[16] Univ N Carolina, Dept Neurol, Chapel Hill, NC 27515 USA