1. National Farm Medicine Center, Marshfield Clinic Research Institute, Marshfield, WI; National Children’s Center for Rural and Agricultural Safety and Health, Marshfield, Wisconsin, USA
2. Northeast Center for Occupational Health and Safety (NEC), Bassett Medical Center, Cooperstown, New York, USA
3. Department of Biological Systems Engineering, University of Wisconsin–Madison
4. Department of Agricultural and Biological Engineering, University of Florida, Gainesville, Florida, USA
5. Department of Biosystems and Agricultural Engineering, University of Kentucky, Kentucky
6. Consultant
7. Department of Agricultural and Biological Engineering, Penn State University, University Park, Pennsylvania, USA
8. Central States Center for Agricultural Safety and Health, University of Nebraska Medical Center, College of Public Health, Omaha, Nebraska, USA