Authors: Urena, PE Lamas, GA Mitchell, G Flaker, GC Smith, SC Wackers, FJ McEwan, P Pfeffer, MA

Citation: Pe. Urena et al., Ejection fraction by radionuclide ventriculography and contrast left ventriculogram - A tale of two techniques, J AM COL C, 33(1), 1999, pp. 180-185