1. Department of Anesthesiology and Intensive Care Medicine, Skane University Hospital, Lund University, Lund, Sweden.
2. Section of Cardiology/Interventional Cardiology, University of Chicago Medicine, Chicago, Illinois.
3. University of Washington-Harborview Center for Prehospital Emergency Care, Division of Internal Medicine, Seattle, Washington.
4. Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.