1. Department of Epidemiology; College of Public Health, University of Iowa; Iowa City Iowa USA
2. Department of Occupational and Environmental Health; College of Public Health, University of Iowa; Iowa City Iowa USA
3. Environmental Health Sciences Research Center; University of Iowa; Iowa City Iowa USA
4. Obesity Research and Education Initiative; University of Iowa; Iowa City Iowa USA
5. Fraternal Order of Eagles Diabetes Research Center; University of Iowa; Iowa City Iowa USA
6. Center for Global and Regional Environmental Research; University of Iowa; Iowa City Iowa USA