[Epidemiological significance of the cold hemagglutination reaction in primary atypical pneumonia].
D006384:Hemagglutination; D006386:Hemagglutination Tests; D011014:Pneumonia; D018410:Pneumonia, Bacterial; D011019:Pneumonia, Mycoplasma; D011024:Pneumonia, Viral
HEMAGGLUTINATION; PNEUMONIA, VIRAL