Subarachnoid Hemorrhage

• Tampere University Hospital — Tampere, Länsi-Suomen Lääni, Finland

• Dept. of Neurosurgery, Medical University of Graz — Graz, Austria
• Neurointensive Care Unit, University Hospital Zurich — Zurich, Switzerland

Not specified

Not specified

• Washington University Medical Center — St Louis, Missouri, United States

• Coordinating Center: University of California, Davis Medical Center, Department of Neurological Surgery — Sacramento, California, United States
• Vanderbilt University Medical Center — Nashville, Tennessee, United States
• University of Washington - Harborview Medical Center — Seattle, Washington, United States
• University of Toronto — Toronto, Ontario, Canada

• Mount Sinai School of Medicine — New York, United States

• Turku University Hospital — Turku, Finland

• Charité University Medicine Department of Neurosurgery Campus Virchow Klinikum — Berlin, State of Berlin, Germany

• Postgraduate institute of medical education and research — Chandigarh, India