[Hypersensitivity pneumonitis--with special reference to the cases seen in summer in Japan].
D000328:Adult; D000368:Aged; D000542:Alveolitis, Extrinsic Allergic / Q000453:epidemiology; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D012621:Seasons