1. Department of Epidemiology, Mailman School of Public Health Columbia University New York New York USA
2. Department of Anesthesiology, Vagelos College of Physicians and Surgeons Columbia University New York New York USA
3. Department of Psychiatry, Vagelos College of Physicians and Surgeons Columbia University New York New York USA
4. Department of Biostatistics, Mailman School of Public Health Columbia University New York New York USA
5. Department of Emergency Medicine University of Colorado School of Medicine Aurora Colorado USA
6. VA Eastern Colorado Geriatric Research Education and Clinical Center Aurora Colorado USA
7. Department of Epidemiology, Colorado School of Public Health University of Colorado Anschutz Medical Campus Aurora Colorado USA
8. University of Michigan Transportation Research Institute, College of Engineering Ann Arbor Michigan USA
9. School of Public Health University of California San Diego La Jolla California USA
10. Department of Health, Behavior and Society Johns Hopkins University Bloomberg School of Public Health Baltimore Maryland USA
11. Center for Injury Science and Prevention Columbia University Irving Medical Center New York New York USA
12. Bassett Research Institute Bassett Healthcare Network Cooperstown New York USA