The minimum requirement for infants and children is not known.
The Technical Commission on Nutrition of the League of Nations1 (1938) placed the requirements of infants at 400 to 500 international units daily.
The Committee on Food and Nutrition of the National Research Council of the United States of America and the Committee on Vitamins of the American Academy of Paediatrics (Dann & Davison,2 1942) put the requirements of children from birth up to 15 years of age at 400 to 800 international (U. S. P.) units daily.
The figure in (c) has been endorsed by the National Nutrition Conference for Defense3 (1941), summoned by President Roosevelt.
Park and Eliot4 (1942) consider that 800 to 1,000 international (U. S. P.) units daily covers any possible requirement of full term infants.
At St. Bartholomew's Hospital, London, for the last ten years, it has been the practice to give daily doses of 600 international units as
SHELDON W, HARRIS C, MORRIS N, MACKAY H. DOSAGE OF VITAMIN D1. OPINIONS ON VITAMIN D REQUIREMENTS OF INFANTS AND CHILDREN. Am J Dis Child. 1943;65(1):158–161. doi:10.1001/archpedi.1943.02010130167010
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