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</script>pmid: 6848967
To the Editor.— The data presented by Sutphen1 are interesting, but they do not speak to the conclusions that are drawn in the paper. If urine creatinine excretion is supposed to reflect body muscle (protein) mass, why wasn't creatinine excretion expressed as milligrams per kilogram of actual weight v actual weight? Inspection of the Table suggests the correlation would not be nearly as good. His results do support the conclusion that larger infants have more protein but variation with malnutrition or maturation is unevaluated.
Creatinine, Infant, Newborn, Humans
Creatinine, Infant, Newborn, Humans
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