[1] Geisel Sch Med Dartmouth, Hanover, NH USA
[2] Univ Copenhagen, Rigshosp Glostrup, Danish Headache Ctr, Dept Neurol, Copenhagen, Denmark
[3] Charite Univ Med Berlin, Dept Neurol, Berlin, Germany
[4] Nashville Neurosci Grp, Nashville, TN USA
[5] Vanderbilt Univ, Dept Neurol, 221 Kirkland Hall, Nashville, TN 37235 USA
[6] DADO MED Sro, Prague Headache Ctr, Prague, Czech Republic
[7] Thomas Jefferson Univ, Jefferson Headache Ctr, Philadelphia, PA 19107 USA
[8] Nova Southeastern Univ, Premiere Res Inst, W Palm Beach, FL USA
[9] Amgen Inc, Global Bio Stat Sci, Thousand Oaks, CA 91320 USA
[10] Amgen Inc, Global Dev, Thousand Oaks, CA 91320 USA