title: [Antibiotics in the prevention of exacerbation of chronic bronchitis. Comparative clinical study with guamecycline and tetracycline HCl].
mesh_terms: D000368:Aged; D000900:Anti-Bacterial Agents / Q000008:administration & dosage*; D001645:Biguanides / Q000008:administration & dosage*; D001991:Bronchitis / Q000517:prevention & control*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012621:Seasons; D013752:Tetracycline / Q000008:administration & dosage*
chemical_list: D000900:Anti-Bacterial Agents; D001645:Biguanides; D013752:Tetracycline
vernacular_title: La profilassi antibiotica per le riacutizzazioni della bronchite cronica. Ricerche cliniche comparative con guameciclina e tetraciclina HCl.