This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
The authors present a recapitulation of the chemistry and physiology of vitamin K in particular relation to hemorrhagic disease of the newborn. In their own studies they found that 47, or 11.9 per cent, of 395 newborn infants had pathologic hypothrombinemia; 20, or 42.55 per cent, of these had hemorrhagic disturbances. The Kato method of prothrombin estimation was used in the studies that gave these rather remarkable results.
Vitamia K en pediatria.. Am J Dis Child. 1942;63(2):424. doi:10.1001/archpedi.1942.02010020209021