Studies of heart disease mortality : an analysis of the accuracy of deaths recorded as being due to heart disease in Washington, D.C., during 1932, with a discussion of the defects of the present method of tabulating deaths, and suggestions for a new system based upon etiological factors / by O.F. Hedley ; prepared by direction of the surgeon general.
Hedley, Odwald Fenton, 1903- | Date: 1936