title: A national study to determine the prevalence of drug resistance in newly discovered previously untreated tuberculosis patients as well as in retreatment cases.
mesh_terms: D000328:Adult; D010131:Aminosalicylic Acid / Q000627:therapeutic use*; D000636:Aminosalicylic Acids / Q000627:therapeutic use*; D002170:Canada; D004352:Drug Resistance, Microbial; D004641:Emigration and Immigration; D006801:Humans; D007538:Isoniazid / Q000627:therapeutic use*; D044469:Racial Groups; D013307:Streptomycin / Q000627:therapeutic use*; D014376:Tuberculosis / Q000188:drug therapy*
chemical_list: D000636:Aminosalicylic Acids; D010131:Aminosalicylic Acid; D007538:Isoniazid; D013307:Streptomycin