1. Department of Emergency Medicine, Massachusetts General Hospital Harvard Medical School Boston Massachusetts USA
2. Department of Emergency Medicine Yale University School of Medicine New Haven Connecticut USA
3. Department of Emergency Medicine Emory University School of Medicine Atlanta Georgia USA
4. Department of Emergency Medicine Icahn School of Medicine at Mount Sinai New York New York USA
5. Department of Emergency Medicine Stanford University Palo Alto California USA
6. Department of Emergency Medicine, University of California Los Angeles David Geffen School of Medicine at University of California Los Angeles Los Angeles California USA
7. Department of Emergency Medicine, Alpert Medial School of Brown University, Department of Epidemiology Brown University School of Public Health Providence Rhode Island USA
8. Department of Emergency Medicine Brigham & Women's Hospital, Harvard Medical School Boston Massachusetts USA