Judith A McInnes1, Ewan M MacFarlane1, Malcolm R Sim1, Peter Smith1,2,3. 1. Department of Epidemiology and Preventive Medicine, Monash University, Monash Centre for Occupational and Environmental Health (MonCOEH), Melbourne, Victoria, Australia. 2. Institute for Work & Health, Toronto, Ontario, Canada. 3. Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.