[1] Univ Copenhagen, Copenhagen, Hovedstaden, Denmark
[2] Kings Coll London, London, England
[3] Charite Univ Med Berlin, Dept Neurol, Berlin, Brandenburg, Germany
[4] Jefferson Headache Ctr, Philadelphia, PA USA
[5] Mayo Clin, Phoenix, AZ USA
[6] Amgen Inc, Thousand Oaks, CA 91320 USA
[7] Novartis Pharma AG, Basel, Switzerland
[8] Amgen Inc, Irvine, CA USA
[9] Amgen Inc, Austin, TX USA