[1] Albert Einstein Coll Med, Saul R Korey Dept Neurol, Bronx, NY 10467 USA
[2] Univ Cincinnati, Coll Med, Headache & Facial Pain Ctr, Cincinnati, OH USA
[3] Vedanta Res, Chapel Hill, NC USA
[4] Allergan Plc, Global Med Affairs, Irvine, CA USA
[5] Montefiore Headache Ctr, Bronx, NY USA