3760717 EGSnrc Electron Gamma Shower 3 3760718 EGSnrc Electron Beam Radiotherapy Using Monte Carlo Simulations 1 3760715 EGSnrc Electron Gamma Shower National Research Council 1 3760714 EGSnrc Electron Gamma Shower version nrc 1 3760716 EGSnrc entering the EPID was compared with full MC simulation 1