Headache Disorders

• LMU Klinikum München — München, Bavaria, Germany
• Kopfschmerzzentrum Frankfurt — Frankfurt am Main, Hesse, Germany
• Vitos - Orthopädische Klinik gGmbH — Kassel, Hesse, Germany
• Universitätsmedizin Greifswald — Greifswald, Mecklenburg-Vorpommern, Germany

• Outpatient clinic of faculty of physical therapy, Ahram Canadian University — Al Ḩayy Ath Thāmin, Giza Governorate, Egypt

• NYU Langone Health — New York, United States

• The First Affiliated Hospital of Shandong First Medical University — Jinan, China

• Mayo Clinic in Arizona — Scottsdale, Arizona, United States

• Gulberg green campus of Riphah International University — Islamabad, Punjab Province, Pakistan

• Yale University — New Haven, Connecticut, United States
• New England Institute for Clinical Research — Stamford, Connecticut, United States
• Eisenhower Army Medical Center — Fort Gordon, Georgia, United States
• Crescent City Headache and Neurology Centre — Chalmette, Louisiana, United States

Not specified

• Munich, Germany
• Budapest, Hungary
• Warsaw, Poland
• Cape Town, South Africa

• Zia Hospital — Lahore, Punjab Province, Pakistan