The prevalence of anaemia in the world.
D000293:Adolescent; D000328:Adult; D000740:Anemia / Q000097:blood / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D003431:Cross-Cultural Comparison; D003430:Cross-Sectional Studies; D003906:Developing Countries; D005260:Female; D006452:Hemoglobinometry; D006801:Humans; D007223:Infant; D008297:Male; D011247:Pregnancy; D014944:World Health Organization