All to sell a product that kills half of its customers," Kelley Lee, a professor of health sciences at Simon Fraser University and co-author of the study, tells Yahoo Canada News.
Waxa ay doonayaan in ay iibiyaan waxyaabo dilay dhammaan macaamiishooda," ayuu yidhi Kelley Lee oo ah khabiir caafimaad oo ka tirsan Jaamacada Simon Fraser oo daraasadana qayb ka ahaa, kaasoo la hadlay Yahoo Canada News.