Inborn errors of metabolism.
D000592:Amino Acid Metabolism, Inborn Errors; D002648:Child; D014644:Genetic Variation; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008661:Metabolism, Inborn Errors / Q000178:diet therapy / Q000209:etiology / Q000378:metabolism; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements; D010348:Patient Care Team; D010661:Phenylketonurias