1. Department of Epidemiology Mailman School of Public Health Columbia University New York NY USA
2. Department of Epidemiology and Preventive Medicine Monash University Melbourne Vic. USA
3. Department of Biostatistics Mailman School of Public Health Columbia University New York NY USA
4. Centre for Health Services Research The University of Queensland Woolloongabba Qld USA
5. Center for Clinical Epidemiology and Biostatistics University of Pennsylvania Philadelphia PA USA
6. Injury Prevention Research Center University of Iowa College of Public Health Iowa City IA USA
7. Research and Policy Development Road Policing Command Queensland Police Service Brisbane Qld USA