1. Rocky Mountain Center for Occupational and Environmental Health University of Utah Salt Lake City UT USA
2. Department of Family and Preventive Medicine School of Medicine University of Utah Salt Lake City UT USA
3. Department of Community, Environment, & Policy Mel and Enid Zuckerman College of Public Health University of Arizona Tucson AZ USA
4. School of Civil Engineering University of Leeds Leeds UK
5. School of Mathematics University of Leeds Leeds UK
6. The Leeds Regional Adult Cystic Fibrosis Centre St. James's University Hospital Leeds Teaching Hospital NHS Trust Leeds UK