1. Applied Aviation Science Department, Embry-Riddle Aeronautical University , Daytona Beach, FL 32114 , USA
2. School of Public Health, Physiotherapy and Sports Science, University College Dublin , Dublin , Ireland
3. Centre for Safety and Health at Work, University College Dublin , Dublin , Ireland
4. Health Service Executive , Dublin , Ireland
5. School of Public Health, University College Cork , Cork , Ireland
6. Department of Health Research Methods, Evidence and Impact (HEI), McMaster University , Hamilton, Ontario , Canada