On the concept "constant diet" in metabolic balance studies.
D002118:Calcium; D004032:Diet; D005504:Food Analysis; D006801:Humans; D008660:Metabolism; D009584:Nitrogen; D011188:Potassium; D012964:Sodium
D012964:Sodium; D009584:Nitrogen; D011188:Potassium; D002118:Calcium