- Correspondence to Dr Oddvar Uleberg, Department of Emergency medicine and Pre-hospital services, Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Norway, St. Olav's University Hospital/AHL, Prinsesse Kristinas gate, Trondheim N-7006, Norway;
- Received March 3, 2015
- Revised May 27, 2015
- Accepted June 8, 2015
- First published June 30, 2015.
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