1. Department of Emergency Medicine, Baylor College of Medicine, Houston, Texas, United States
2. Department of Medicine, Baylor College of Medicine, Houston, Texas, United States
3. Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey VA Medical Center, Houston, Texas, United States
4. School of Medicine, Baylor College of Medicine, Houston, Texas, United States
5. University of Texas School of Public Health, UT Health Science Center, Houston, Texas, United States
6. Department of Emergency Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States
7. Department of Emergency Medicine, Barnes Jewish Hospital, Washington University School of Medicine, Emergency Care Research Core, St. Louis, Missouri, United States
8. Harvard Medical School, Boston, Massachusetts, United States
9. University of Texas Health Consortium on Aging, Houston, Texas, United States