1. Department of Emergency Medicine University of Iowa Roy J and Lucille A Carver College of Medicine Iowa City Iowa USA
2. Department of Emergency Medicine University of Minnesota Medical Center Minneapolis Minnesota USA
3. Hardin Library for the Health Sciences University of Iowa Iowa City Iowa USA
4. Schwartz/Reisman Emergency Medicine Institute Sinai Health Toronto ON Canada
5. Department of Medicine University of Toronto Toronto Ontario Canada
6. Emergency Medicine The University of Western Australia Perth Western Australia Australia
7. Department of Emergency Medicine Vanderbilt University Medical Center Nashville Tennessee USA
8. Geriatric Research, Education, and Clinical Center Tennessee Valley Healthcare System Nashville Tennessee USA
9. Department of Emergency Medicine Massachusetts General Hospital Boston Massachusetts USA
10. Department of Emergency Medicine Washington University in Saint Louis Saint Louis Missouri USA