Epidemiology of haemorrhoids in the adult Nigerian and English: a comparative study.
Iwatt
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AR
D000293:Adolescent; D000328:Adult; D000368:Aged; D003248:Constipation / Q000453:epidemiology; D004739:England; D005260:Female; D006484:Hemorrhoids / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009549:Nigeria