Headache Disorders

• Central Research Associates, Inc — Birmingham, Alabama, United States
• Neurological Physicians of Arizona/Radiant Research Inc — Gilbert, Arizona, United States
• Clinical Research Consortium Arizona — Tempe, Arizona, United States
• Radiant Research, Inc. — Tucson, Arizona, United States

• University of Washington — Seattle, Washington, United States

• Élite Fisioterapia, María Montessori 2. — Zaragoza, Spain

• Department of Rehabilitation Sciences, College of applied Medical Science, King Saud University — Riyadh, Saudi Arabia

• Ziauddin University — Karachi, Sindh, Pakistan

• Site 744 — Birmingham, Alabama, United States
• Site 727 — Phoenix, Arizona, United States
• Site 723 — Little Rock, Arkansas, United States
• Site 718 — Rogers, Arkansas, United States

• Site 609 — Birmingham, Alabama, United States
• Site 640 — Mobile, Alabama, United States
• Site 622 — Tucson, Arizona, United States
• Site 616 — Hot Springs, Arkansas, United States

• Clinical Research Institute, Inc. — Minneapolis, Minnesota, United States
• Endocrinology Research Associates, Inc. — Columbus, Ohio, United States
• Remington-Davis Clinical Research — Columbus, Ohio, United States

Not specified

• Teva Investigational Site 14065 — Phoenix, Arizona, United States
• Teva Investigational Site 14069 — Scottsdale, Arizona, United States
• Teva Investigational Site 14048 — Little Rock, Arkansas, United States
• Teva Investigational Site 30236 — Little Rock, Arkansas, United States