title: Hardness of human nail as an index of nutritional status: a preliminary communication.
mesh_terms: D000328:Adult; D002648:Child; D002675:Child, Preschool; D006244:Hardness; D006245:Hardness Tests; D006801:Humans; D007223:Infant; D007228:Infant Nutrition Disorders; D009262:Nails / Q000502:physiology*; D009747:Nutritional Physiological Phenomena