1. Department of Psychological Sciences University of Connecticut Storrs CT USA
2. USDA Forest Service, Northern Research Station Philadelphia Field Station Philadelphia PA USA
3. Department of Biostatistics and Epidemiology Rutgers School of Public Health Piscataway NJ USA
4. School of Public Health University of Michigan Ann Arbor MI USA
5. Urban Health Lab Department of Emergency Medicine Perelman School of Medicine Philadelphia PA USA
6. Department of Emergency Medicine University of Michigan Medical School Ann Arbor MI USA
7. Department of Epidemiology Columbia Mailman School of Public Health New York NY USA