  We argue in favor of dynamical mass generation in an SU(2)xU(1) electroweak
model with two complex scalar doublets with ordinary masses. The masses of
leptons and quarks are generated by ultraviolet-finite non-perturbative
solutions of the Schwinger-Dyson equations for full fermion propagators with
self-consistently modified scalar boson exchanges. The W and Z boson masses are
expressed in terms of spontaneously generated fermion proper self-energies in
the form of sum rules. The model predicts two charged and four real neutral
heavy scalars.
