1. Illinois Fire Service Institute, University of Illinois, Urbana, IL, USA
2. UL Firefighter Safety Research Institute, Columbia, MD, USA
3. National Institute for Occupational Safety & Health, Cincinnati, OH, USA
4. Carle Physician Group, Urbana, IL, USA
5. Skidmore College, Saratoga Springs, NY, USA
6. Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL, USA