title: [Pathogens in lower respiratory tract diseases in children with special reference to the relationship between bacteria and viruses].
mesh_terms: D000208:Acute Disease; D001249:Asthma / Q000382:microbiology; D001419:Bacteria / Q000302:isolation & purification*; D001991:Bronchitis / Q000188:drug therapy / Q000382:microbiology*; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D003168:Complement Fixation Tests; D005260:Female; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010406:Penicillins / Q000627:therapeutic use; D013752:Tetracycline / Q000627:therapeutic use; D014780:Viruses / Q000302:isolation & purification*
chemical_list: D010406:Penicillins; D013752:Tetracycline