Migraine Disorders

• Palo Alto Medical Foundation Research Institute — Palo Alto, California, United States

• 21st Century Neurology — Phoenix, Arizona, United States
• Arizona Research Center — Phoenix, Arizona, United States
• Axiom Research — Apple Valley, California, United States
• Cedars Sinai Medical Center — Los Angeles, California, United States

• Territory Neurology & Research Institute — Tucson, Arizona, United States
• Orange Grove Family Practice — Tucson, Arizona, United States
• Arkansas Clinical Research — Little Rock, Arkansas, United States
• Advanced Clinical Research — Carmichael, California, United States

• California Medical Clinic for Headache — Santa Monica, California, United States
• Encompass Clinical Research — Spring Valley, California, United States
• New England Institute for Clinical Research — Stamford, Connecticut, United States
• Sunrise Clinical Research — Hollywood, Florida, United States

• Danish headache center — Glostrup Municipality, Copenhagen, Denmark

• Research Site — Birmingham, Alabama, United States
• Research Site — Phoenix, Arizona, United States
• Research Site — Little Rock, Arkansas, United States
• Research Site — Carlsbad, California, United States

• Mansoura University Hospital — Al Mansurah, Dakahlia Governorate, Egypt

Not specified

• Research Site — Birmingham, Alabama, United States
• Research Site — Phoenix, Arizona, United States
• Research Site — Tucson, Arizona, United States
• Research Site — Little Rock, Arkansas, United States

• Wake Forest University Health Sciences — Winston-Salem, North Carolina, United States