[Pure red cell anemia (PRCA)--classification, etiology and clinical statistics in Japan].
D000293:Adolescent; D000328:Adult; D000368:Aged; D000741:Anemia, Aplastic / Q000145:classification / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007564:Japan; D008297:Male; D008875:Middle Aged