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Am J Dis Child. 1928;36(3):450-462. doi:10.1001/archpedi.1928.01920270027004.
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The amount of calcium excreted in the stools of a normal breast-fed infant is quite a large part of the calcium ingested. It is a remarkable fact that even breast-fed infants rarely absorb as much as 50 per cent of the calcium in the milk while, with the exception of magnesium, only a small part of the other mineral substances generally remains unabsorbed. In a paper dealing with the calcium and phosphorus metabolism of premature infants, published by one of us (B. H.) several years ago,1 the argument was put forward that the large part of the ingested calcium which reappears in the stools must have some function to fill in the body. After discussing the various possibilities, the conclusion was arrived at that the calcium in the stools probably originates chiefly from calcium excreted into the intestine after having played a rôle in the acid-base metabolism of the


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The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
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