1. Transportation Research Institute, University of Michigan , Ann Arbor, Michigan , USA
2. School of Public Health, University of Minnesota , Minneapolis, Minnesota , USA
3. Department of Psychology and Neuroscience, Emmanuel College , Boston, Massachusetts , USA
4. School of Psychology, The University of Queensland , St Lucia, Brisbane, Queensland , Australia
5. School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Brisbane, Queensland, Australia and the Princess Alexandra Hospital in Woolloongabba , Australia
6. School of Health Sciences and Social Work, Griffith University , Nathan, Queensland , Australia