Epidemiological studies of Mycoplasma pneumoniae infections in civilians.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D009175:Mycoplasma Infections / Q000453:epidemiology* / Q000235:genetics; D011014:Pneumonia / Q000453:epidemiology / Q000209:etiology*; D012621:Seasons