[1] Wellcome Trust Sanger Inst, Cambridge, England
[2] Univ Helsinki, Inst Mol Med Finland FIMM, Helsinki, Finland
[3] DeCODE genet, Dept Populat Genom, Reykjavik, Iceland
[4] Univ Helsinki, Cent Hosp, Dept Neurol, Helsinki, Finland
[5] Univ Cologne, Inst Human Genet, Cologne, Germany
[6] Univ Cologne, Inst Genet, D-5000 Cologne, Germany
[7] Univ Cologne, Ctr Mol Med Cologne, D-5000 Cologne, Germany
[8] Leiden Univ, Med Ctr, Dept Neurol, Leiden, Netherlands
[9] Cambridge Univ Hosp Natl Hlth Serv Fdn Trust, Cambridge Biomed Res Ctr, Nat Inst Hlth Res, Cambridge, England
[10] Queensland Inst Med Res, Neurogenet Lab, Brisbane, Qld 4006, Australia
[11] Univ Oxford, Wellcome Trust Ctr Human Genet, Oxford, England
[12] Univ Geneva, Sch Med, Dept Genet Med & Dev, Geneva, Switzerland
[13] Univ Munich, Dept Neurol, Klinikum Grosshadern, Munich, Germany
[14] Klinikum Univ Munchen, Inst Stroke & Dementia Res, Munich, Germany
[15] Max Planck Inst Psychiat, D-80804 Munich, Germany
[16] Leiden Univ, Dept Human Genet, Med Ctr, NL-2300 RA Leiden, Netherlands
[17] Folkhalsan Res Ctr, Helsinki, Finland
[18] Kiel Pain & Headache Ctr, Kiel, Germany
[19] Landspitali Univ Hosp, Dept Neurol, Reykjavik, Iceland
[20] Danish Headache Ctr, Glostrup, Denmark
[21] Glostrup Cty Hosp, Dept Neurol, Glostrup, Denmark
[22] Univ Copenhagen, Research Inst Biol Psychiat, Roskilde, Denmark
[23] Univ Liege, Headache Res Unit, Dept Neurol, B-4000 Liege, Belgium
[24] Univ Liege, GIGA, B-4000 Liege, Belgium
[25] Univ Helsinki, Cent Hosp, Dept Gen Practice, Helsinki, Finland
[26] Cent Hosp, Vaasa, Finland
[27] Nat Inst Hlth & Welf, Helsinki, Finland
[28] Norwegian Univ Sci & Technol, Dept Neurosci, N-7034 Trondheim, Norway
[29] Inst Epidemiol, Helmholtz Ctr Munich, Neuherberg, Germany
[30] Univ Munich, Inst Med Informationsverarbeitung, Munich, Germany
[31] Inst Human Genet, Helmholtz Ctr Munich, Neuherberg, Germany
[32] Tech Univ Munich, Inst Human Genet, Klinikum Rechts Isar, Munich, Germany
[33] Univ Bonn, Dept Genom, Life & Brain Ctr, D-5300 Bonn, Germany
[34] Univ Bonn, Inst Human Genet, D-5300 Bonn, Germany
[35] Univ Duisburg Essen, Univ Hosp Essen, Inst Med Informat Biometry & Epidemiol, Essen, Germany
[36] Univ Kiel, Dept Clin Mol Biol, Kiel, Germany
[37] Univ Kiel, Dept Internal Med 1, Kiel, Germany
[38] Erasmus Univ, Med Ctr, Dept Epidemiol, Rotterdam, Netherlands
[39] Erasmus Univ, Med Ctr, Dept Internal Med, Rotterdam, Netherlands
[40] Univ Helsinki, Res Program Mol Med, Helsinki, Finland
[41] GlaxoSmithKline Res & Dev Ltd, Verona, Italy
[42] Univ Toronto, Dept Psychiat, Ctr Addict & Mental Hlth, Toronto, ON, Canada
[43] Univ Helsinki, Dept Publ Hlth, Helsinki, Finland
[44] Broad Inst & Harvard, Boston, MA USA
[45] Oslo Univ Hosp & Univ, Dept Neurol, Oslo, Norway
[46] Univ Cologne, Cologne Excellence Cluster Cellular Stress Resp, Cologne, Germany
[47] Univ Ulm, Inst Human Genet, Ulm, Germany
[48] Univ Helsinki, Dept Med Genet, Helsinki, Finland
[49] Univ Helsinki, Cent Hosp, Dept Med Genet, Helsinki, Finland