title: The problem of preventive treatment with isoniazid in persons with fibrotic lesions in the lungs.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003604:Czechoslovakia; D005260:Female; D006801:Humans; D007223:Infant; D007538:Isoniazid / Q000627:therapeutic use*; D008297:Male; D008400:Mass Chest X-Ray; D008875:Middle Aged; D009169:Mycobacterium tuberculosis / Q000302:isolation & purification; D011658:Pulmonary Fibrosis; D013902:Radiography, Thoracic; D012737:Sex Factors; D013183:Sputum / Q000382:microbiology; D013997:Time Factors; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis / Q000453:epidemiology / Q000517:prevention & control*
chemical_list: D007538:Isoniazid