title: Metabolic balance studies in premature babies. I. Methodology.
mesh_terms: D002657:Child Development; D004032:Diet; D006801:Humans; D007224:Infant Care; D007227:Infant Nutritional Physiological Phenomena; D007231:Infant, Newborn; D007234:Infant, Premature; D008660:Metabolism; D008722:Methods