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Am J Dis Child. 1937;53(6):1521-1527. doi:10.1001/archpedi.1937.04140130099010.
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Two siblings with an unusual disease of the bones were recently observed:

Case 1.—J. H., a white boy of Irish-American parentage, was admitted to the Bellevue Hospital in October 1933 and again in January 1936 because of knock knee. He was born Oct. 10, 1926. Labor was normal, and the weight at birth was 3,380 Gm. He was artificially fed after the second month of life and received cod liver oil and orange juice at an early age. Development was normal; the child teethed, walked and talked at about the normal age. There were no illnesses except pertussis, at the age of 6 years.

The father and mother were well. Roentgenograms of their long bones were normal. The condition of the sister, 6 years old, was similar to that of the patient. There was no history of deformity of the bones in any of the relatives.

The chief complaint was


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