Trends and epidemics of influenza and pneumonia: 1918-1951.
D001699:Biometry; D058872:Epidemics; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology* / Q000706:statistics & numerical data*; D011014:Pneumonia / Q000453:epidemiology* / Q000706:statistics & numerical data*
INFLUENZA/epidemiology and statistics; PNEUMONIA/epidemiology and statistics