[Studies on the relationship between bronchial asthma and respiratory infections].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001249:Asthma / Q000382:microbiology*; D001419:Bacteria / Q000302:isolation & purification*; D001991:Bronchitis / Q000382:microbiology*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011656:Pulmonary Emphysema / Q000382:microbiology*; D012621:Seasons; D013183:Sputum / Q000382:microbiology