Affiliation: | Institut National de Santé Publique du Québec, Québec City, Québec, Canada (R. Gilca, E. Fortin);;Québec University Hospital Centre, Québec City (R. Gilca);;Laval University, Québec City (R. Gilca);;McGill University Health Center, Montreal, Québec, Canada (C. Frenette, E. Fortin);;and Direction Régionale de Santé Publique, Québec City (N. Thériault, J. Villeneuve) |