1. Herbert Wertheim School of Public Health, University of California, San Diego, La Jolla, California, USA
2. Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, USA
3. School of Public Health, San Diego State University, San Diego, CA, USA
4. Public Health Department, Centre intégré de santé et de services sociaux de la Montérégie-Centre, Longueuil, Québec, Canada