Stroke, Acute

• Bispebjerg Hospital — Copenhagen, København NV, Denmark
• Danish Research Centre for Magnetic Resonance — Copenhagen, Denmark

• Akershus University Hospital — Lørenskog, Norway

• Lancaster General Hospital — Lancaster, Pennsylvania, United States
• Penn Presbyterian Medical Center — Philadelphia, Pennsylvania, United States
• The Hospital of the University of Pennsylvania — Philadelphia, Pennsylvania, United States
• Pennsylvania Hospital — Philadelphia, Pennsylvania, United States

Not specified

Not specified

• New York Presbyterian Brooklyn Methodist Hospital — Brooklyn, New York, United States

• Cliniques Universitaires Saint-Luc — Brussels, Belgium

• Emergency Medical Services — Næstved, Denmark

• Service des Urgences Cérébro-Vasculaires, Hôpitaux Universitaires Pitié-Salpêtrière et Saint-Antoine — Paris, France

• Stanford University — Palo Alto, California, United States