1. Department of Social and Preventive Medicine, Laval University, Quebec City, Canada
2. Direction des Risques Biologiques et de la Santé au Travail, Institut National de Santé Publique du Québec, Quebec City, Canada
3. Quebec University Hospital Research Centre, Quebec City, Canada
4. Public Health Directorate, Nunavik Regional Board of Health and Social Services, Kuujjuaq, Canada