1. Department of Community, Environment, & Policy, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, Arizona
2. Arizona Health Sciences Library, University of Arizona, Tucson, Arizona
3. Department of Health Promotion Sciences, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, Arizona
4. Department of Environmental Health Sciences, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California