F. Alarcón, Latin American Migraine Study Group; Andrea Alberti, Neuroscience Department, University of Perugia, Italy; N. Aranaga, Latin American Migraine Study Group; Messoud Ashina, Danish Headache Center and Department of Neurology, Glostrup Hospital, University of Copenhagen, Denmark; Sait Ashina, Danish Headache Center and Department of Neurology, Glostrup Hospital, University of Copenhagen, Denmark; S. Aulet, Latin American Migraine Study Group; A. Autret, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); G. Baudesson, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); E. Beghi, Mario Negri Institute and Neurological Clinic, University of Milano-Bicocca, Milan, Italy; Lars Bendtsen, The Danish Headache Center, Department of Neurology, University of Copenhagen, Glostrup Hospital, Denmark; Marcelo E. Bigal, Department of Neurology, Epidemiology and Population Health, Albert Einstein College of Medicine, and Montefiore Headache Clinic, New York, The New England Center for Headache, Stamford, USA; Marie-Germaine Bousser, Service de Neurologie, Hôpital Lariboisière, Paris, France; Rami Burstein, Department of Anesthesia and Critical Care, Harvard Institutes of Medicine, Boston, USA; Giuseppe Capocchi, Neurologic Clinic, Department of Neuroscience, University of Perugia, Italy; Alberto P. Cecchini, University Centre for Adaptive Disorders and Headache, IRCCS "C Mondino" Foundation, Pavia, Italy; E. Chapman, Latin American Migraine Study Group; M. H. Chautard, Astra Zeneca, France; L. Conterno, Latin American Migraine Study Group; Donatella Corigliano, Department of Neurology and Otholaringology, University of Rome La Sapienza, Italy; J. Couch, University of Oklahoma Health Sciences Center, Oklahoma City, USA; C. Creach, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); D. Dodick, Mayo Clinic, Scottsdale, USA; A. Donnet, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); V. Dousset, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); Malene K. Eriksen, Danish Headache Center, University of Copenhagen, Department of Neurology, Glostrup University Hospital, Denmark; E. Estévez, Latin American Migraine Study Group; F. Fabre, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); Michel D. Ferrari, Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands; Daniela Fortini, IRCCS S. Lucia, Rome, Italy; F. Garcia-Pedroza, Latin American Migraine Study Group; J. Garrido, Latin American Migraine Study Group; G. Géraud, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); U. Gessner, Bayer Vital GmbH, Consumer-Care, Cologne, Germany; Natascia Ghiotto, University Centre for Adaptive Disorders and Headache, IRCCS "C Mondino" Foundation, Pavia, Itsly; Patrizia Giacomini, Department of Neurology and Otholaringology, University of Rome La Sapienza, Italy; Rosario Gil, Department of Neurology, Hospital Clinico Universitario, University of Valencia, Spain; G. Giraud, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); M. Girot, Department of Neurology, Lille University Hospital, France; Peter J. Goadsby, Headache Group, Institute of Neurology, London, UK; Sances Grazia, University Centre for Adaptive Disorders and Headache, IRCCS "C Mondino" Foundation, Pavia, Italy; E. Guaschino, University Centre for Adaptive Disorders and Headache, IRCCS "C Mondino" Foundation, Pavia, Italy; E. Guégan-Massardier, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); N. Guy, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); Hartmut Göbel, Kiel Pain Clinic, Kiel, Germany; Axel Heinze, Kiel Pain Clinic, Kiel, Germany; Katja Heinze-Kuhn, Kiel Pain Clinic, Kiel, Germany; H. Hénon, Department of Neurology, Lille University Hospital, France; J. Hettiarachchi, Pfizer Inc, New York, USA; Moshe Jakubowski, Department of Anesthesia and Critical Care, Harvard Medical School, Boston, USA; Rigmor Jensen, The Danish Headache Center, Department of Neurology, University of Copenhagen, Glostrup Hospital, Denmark; K. Kolodnor, IMR, AdvancePCA, Hunt Valley, USA; Christian Kubisch, Institute of Human Genetics, University of Bonn, Germany; R. Kunickas, Traumatology Emergency Ward, Red Cross Hospital, Kaunas, Lithuania; Miguel J. A. Láinez, Department of Neurology, Hospital Clinico Universitaria, Valencia, Spain; James W. Lance, Institute of Neurological Sciences, Prince of Wales Hospital, Woollahra, Australia; M. Lanteri-Minet, Department of Evaluation and Treatment of Pain, Hopital Pasteur, Nice, France; J. Leston, Latin American Migraine Study Group; D. Leys, Department of Neurology, Lille University Hospital, France; Richard B. Lipton, Departments of Neurology, Epidemiology and Social Medicine, Albert Einstein College of Medicine, New York, USA; C. Lucas, Department of Neurology, Lille University Hospital, France; M. Macias-Islas, Latin American Migraine Study Group; M. A. Mackowiak, Department of Neurology, Lille University Hospital, France; G. C. Manzoni, Headache Center, Section of Neurology, Department of Neuroscience, University of Parma, Italy; Pasquale Marchione, Department of Neurology and Otholaringology, University of Rome La Sapienza, Italy; H. Massiou, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); Giovanni Mazzotta, Neuroscience Department, University of Perugia, Italy; G. Mick, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); D. Mickeviciene, Department of Neurology, Red Cross Hospital, Kaunas Lithuania and Department of Neurology, Medical University Clinic, Kaunas, Lithuania; P. Monzillo, Latin American Migraine Study Group; L. E. Morillo, Javeriana University, Bogotá, Colombia; Giuseppe Nappi, University Centre for Adaptive Disorders and Headache, IRCCS "C Mondino" Foundation, Pavia and Department of Neurology and Otolaryngology, University La Sapienza, Rome, Italy; M. Navez, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); L. Núnez, Latin American Migraine Study Group; D. Obelieniene, Department of Neurology, Medical University Clinic, Kaunas, Lithuania; Jes Olesen, Department of Neurology, Glostrup Hospital, University of Copenhagen, Denmark; Ana M. Pascual, Department of Neurology, Hospital Clinico Universitario, University of Valencia, Spain; Mauro Pedini, Computer Science Educational Laboratory, Faculty of Medicine, Neurologic Clinic, University of Perugia, Italy; A. Perez, Latin American Migraine Study Group; M. Petersen-Braun, Bayer Vital GmbH, Consumer-Care, Cologne, Germany; N. Plascencia, Latin American Migraine Study Group; A. Pradalier, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); F. Radat, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); C. Rodriguez, Latin American Migraine Study Group; Fumihiko Sakai, Kitasato University Hospital, Sagamihara Kanagawa, Japan; Antonio Salvador, Department of Neurology, Hospital Clinico Universitario, University of Valencia, Spain; Domenico Samá, Department of Neurology and Otholaringology, University of Rome La Sapienza, Italy; T. Sand, Norwegian National Headache Center, Trondheim University Hospital, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway; Giorgio Sandrini, University Centre for Adaptive Disorders and Headache, IRCCS "C Mondino" Foundation, Pavia, Italy; L. C. Sanin, Latin American Migraine Study Group; Paola Sarchielli, Neurologic Clinic, Neuroscience Department, University of Perugia, Italy; H. Schrader, Norwegian National Headache Center, Trondheim University Hospital, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway; Stephen Silberstein, Director, Jefferson Headache Center and Professor of Neurology, Thomas Jefferson University Hospital, Philadelphia, USA; F. Silva, Latin American Migraine Study Group; N. Simonovis, Latin American Migraine Study Group; L. J. Stovner, Norwegian National Headache Center, Trondheim University Hospital, Faculty of Medicine, Norwegian University of Science and Technology, Norway; D. Surkiene, Department of Neurology, Medical University Clinic, Kaunas, Lithuania; Y. Takeuchi, Latin American Migraine Study Group; Cristina Tassorelli, University Centre for Adaptive Disorders and Headache, IRCCS "C Mondino" Foundation, Pavia, Italy; Lise Lykke, Thomsen,Danish Headache Center, University of Copenhagen, Department of Neurology, Glostrup, University Hospital, Denmark; Unda Todt, Institute of Human Genetics, University of Bonn, Germany; P. Torelli, Headache Center, Section of Neurology, Department of Neuroscience, University of Parma, Italy; D. Valade, Société Francaise d'Etudes Des Migraines et Céphalées (SFEMC); Claudio Vento, Department of Neurology and Otholaringology, University of Rome La Sapienza, Italy; M. Viallet, Department of Neurology, Lille University Hospital, France; U. Weingärtner, Bayer Vital GmbH, Consumer-Care, Cologne, Germany; Natalie J. Wiendels, Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands; A. Waage, Department of Medicine, Section for Hematology, Trondheim University Hospital, Norwegian University of Science and Technology, Norway; A. H. Aamodt, Norwegian National Headache Centre, Trondheim University Hospital, Norwegian University of Science and Technology, Norway.