Poliomyelitis attack rates in American troops, 1940-1948.
D001699:Biometry; D005006:Ethnicity; D006801:Humans; D015994:Incidence; D011051:Poliomyelitis / Q000453:epidemiology* / Q000706:statistics & numerical data*; D014481:United States
POLIOMYELITIS/epidemiology and statistics