title: A five year study of bacteriology and prophylactic chemotherapy in patients with chronic bronchitis.
mesh_terms: D000328:Adult; D001991:Bronchitis / Q000188:drug therapy* / Q000382:microbiology* / Q000517:prevention & control*; D002701:Chloramphenicol / Q000627:therapeutic use; D002908:Chronic Disease; D005500:Follow-Up Studies; D006193:Haemophilus influenzae / Q000187:drug effects / Q000302:isolation & purification; D006801:Humans; D008297:Male; D008875:Middle Aged; D010118:Oxytetracycline / Q000627:therapeutic use; D011511:Proteus / Q000472:pathogenicity; D013183:Sputum / Q000382:microbiology; D013296:Streptococcus pneumoniae / Q000187:drug effects / Q000302:isolation & purification; D013449:Sulfonamides / Q000627:therapeutic use
chemical_list: D013449:Sulfonamides; D002701:Chloramphenicol; D010118:Oxytetracycline