The relationship of koilonychia and iron deficiency in infants.
D000747:Anemia, Hypochromic / Q000150:complications*; D003677:Deficiency Diseases / Q000150:complications; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007501:Iron / Q000378:metabolism*; D008297:Male; D009264:Nails, Malformed / Q000209:etiology*
D007501:Iron