1. Department of Emergency Medicine, Center for Resuscitation Science, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
2. School of Nursing, University of Pennsylvania, Philadelphia, PA
3. North York General Hospital, University of Toronto, North York, ON, Canada
4. Department of Emergency Medicine, University of Pittsburgh Post Cardiac Arrest Service, University of Pittsburgh Medical Center Presbyterian, Pittsburg, PA
5. Department of Emergency Medicine, University of Alabama, Birmingham, AL
6. Michigan State University College of Human Medicine, Grand Rapids, MI
7. Vanderbilt University School of Nursing, Nashville, TN