[Refractory anemias in Japan].
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000753:Anemia, Refractory / Q000097:blood* / Q000401:mortality; D001772:Blood Cell Count; D004913:Erythrocytes, Abnormal / Q000473:pathology; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D011379:Prognosis