%0 Journal Article %T DIFFERING VIRULENCE OF H1N1 AND H3N2 INFLUENZA STRAINS %A WRIGHT, PETER F. %A THOMPSON, JULIETTE %A KARZON, DAVID T. %J American Journal of Epidemiology %V 112 %N 6 %P 814-819 %@ 0002-9262 %D 1980-12-01 %I Oxford University Press %~ DeepDyve