Affiliation: | *Gundersen Lutheran Medical Center, La Crosse, Wisconsin, USA;;†North Park University, Chicago, Illinois, USA;;‡Forest Preserve District of DuPage County, Wheaton, Illinois, USA;;§Forest Preserve District of Cook County, Elgin, Illinois, USA;;¶DuPage County Department of Health, Wheaton, Illinois, USA;;#Cook County Department of Public Health, Oak Park, Illinois, USA |