title: Smokeless tobacco: a northern perspective.
mesh_terms: D000293:Adolescent; D002170:Canada; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009062:Mouth Neoplasms / Q000517:prevention & control*; D009602:Nitrosamines / Q000032:analysis; D010947:Plants, Toxic; D014026:Nicotiana / Q000032:analysis; D014029:Tobacco Use Disorder / Q000517:prevention & control*; D014030:Tobacco, Smokeless / Q000032:analysis
chemical_list: D009602:Nitrosamines