1. Health Sciences Program, College of Medicine, Canadian Centre for Health and Safety in Agriculture, Respiratory Research Centre, University of Saskatchewan, Saskatoon, SK, Canada
2. Department of Medicine, Memorial University of Newfoundland, St. John’s, NL, Canada
3. Department of Paediatrics, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
4. Department of Computer Science, College of Arts and Science, University of Saskatchewan, Saskatoon, SK, Canada
5. College of Nursing and Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, SK, Canada
6. Department of Medicine, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
7. Provincial Research Data Services, Alberta Health Service, Calgary, AB, Canada
8. Department of Medicine, Canadian Centre for Health and Safety in Agriculture, and Respiratory Research Centre, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada