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A PRISMA diagram detailing the systematic review approach, a description of the studies included and the full details about the methods are in Supplementary Information 1.5 and 5.2

Chewing Tobacco and Oral Health A study by the University of Bern has examined the effects of chewing tobacco on oral hygiene in more detail

Studies that measured responses to price changes in the short term tended to report lower elasticity than studies that reported long-run estimates (0.40 compared with 0.44)

Int J Neuropsychopharmacol (e-pub ahead of print)

Robert Schwartz, professor emeritus at the University of Toronto and executive director of the Ontario Tobacco Research Unit, said the lack of information on where the money will go is concerning

Malawi has the highest occurrence of child labor in southern Africa