Migraine Disorders

• Kaiser Permanente — San Diego, California, United States
• Duke University Medical Center — Durham, North Carolina, United States
• Thomas Jefferson University — Philadelphia, Pennsylvania, United States

• Duke Child and Family Study Center — Durham, North Carolina, United States

• C. Philip O'Carrroll, MD, Inc. — Newport Beach, California, United States
• The Research Center of Southern California, LLC — Oceanside, California, United States
• San Francisco Headache Clinic — San Francisco, California, United States
• California Medical Clinic for Headache — Santa Monica, California, United States

Not specified

• Comprehensive Neuroscience, Inc. — St. Petersburg, Florida, United States
• Comprehensive NeuroScience, Inc. Atlanta — Atlanta, Georgia, United States
• Elkind Headache Center — Mount Vernon, New York, United States
• Lifetree Clinical Research — Salt Lake City, Utah, United States

Not specified

Not specified

• Innsbruck, Austria
• Linz, Austria
• Antwerp, Belgium
• Charleroi, Belgium

• Jefferson Headache Center — Philadelphia, Pennsylvania, United States

• Danish Headache Center & Department of Neurology — Copenhagen, Glostrup, Denmark