Author References Bronwen J Waller, Ontario Tobacco Research Unit, University of Toronto, Toronto, Ontario, Canada Joanna E Cohen, Mary Jane Ashley, Ontario Tobacco Research Unit, and Department of Public Health Sciences, University of Toronto, Toronto, Ontario, Canada Correspondence:
Coordonnées des auteurs Bronwen J Waller, Unité de recherche sur le tabac de l'Ontario, University of Toronto, Toronto (Ontario) Canada Joanna E Cohen, Mary Jane Ashley, Unité de recherche sur le tabac de l'Ontario et Department of Public Health Sciences, University of Toronto, Toronto (Ontario) Canada Correspondance :