Doxycycline in the treatment of lower respiratory tract infections.
D000293:Adolescent; D000328:Adult; D001424:Bacterial Infections / Q000188:drug therapy*; D002648:Child; D004318:Doxycycline / Q000627:therapeutic use*; D004341:Drug Evaluation; D004352:Drug Resistance, Microbial; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D012141:Respiratory Tract Infections / Q000188:drug therapy*; D013752:Tetracycline / Q000494:pharmacology
D013752:Tetracycline; D004318:Doxycycline