University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
National Taiwan University Hospital, Taipei, Taiwan
Veterans General Hospital - Taichung, Taichung, Taiwan
Cliniques Universitaires Saint Luc, Bruxelles, Belgium
Washington University, Saint Louis, Missouri, United States
Hospital Clinic i Provincial de Barcelona, Barcelona, Cataluña, Spain
Institute Jules Bordet, Brussels, Belgium
Centre Hospitalier Intercommunal de Créteil, Créteil, France
James J Peters VA Medical Center, Bronx, New York, United States
Cardiology Associates of Fairfield County, PC, Stamford, Connecticut, United States
Diagnostic Cardiology Group, Chattanooga, Tennessee, United States
Yale New Haven Hospital, New Haven, Connecticut, United States
VieCuri Medisch Centrum, Venlo, Netherlands
Baylor College of Medicine, Houston, Texas, United States
Piedmont Healthcare, Atlanta, Georgia, United States
Glostrup Hospital, Glostrup, Denmark
Thjonustumidstod Rannsoknaverkefna, Reykjavik, Iceland
Wake Forest Baptist Health, Winston-Salem, North Carolina, United States
Landeskrankenhaus Salzburg, Salzburg, Austria
Klinikum rechts der Isar, München, Germany
Chicago Headache Center and Research Institute, Chicago, Illinois, United States
Clinical Research Institute, LLC, Los Angeles, California, United States
Poliklinika Chocen, Neurohk sro, Chocen, Czechia
Anaheim Clinical Trials, Anaheim, California, United States
Clinical Pharmacology of Miami, LLC, Miami, Florida, United States
Orange County Research Center, Tustin, California, United States
Centre Hospitalier Régional Universitaire de Lille - Hôpital Claude Huriez, Lille Cedex, France
University Hospital of Ioannina, Ioannina, Greece
Azienda Unita Sanitaria Locale LE Presidio Ospedaliero Vito Fazzi Polo Oncologico Giovanni Paolo II, Lecce, Italy