title: Letter: Protein requirement.
mesh_terms: D002675:Child, Preschool; D004044:Dietary Proteins; D006801:Humans; D007223:Infant; D007732:Kwashiorkor / Q000178:diet therapy* / Q000517:prevention & control; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements
chemical_list: D004044:Dietary Proteins