Dietary folic acid and iron deficiency among the affluent.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003677:Deficiency Diseases / Q000453:epidemiology*; D004219:District of Columbia; D005260:Female; D005494:Folic Acid Deficiency / Q000453:epidemiology*; D006801:Humans; D007501:Iron / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D012959:Socioeconomic Factors
D007501:Iron