Quantum-Electrodynamics without renormalization V. Bosonic contributions   to the photon mass
  The bosonic contributions to the photon mass are shown to be of the same form as the fermionic contributions, but of opposite sign. A mass sum rule for bosons and fermions follows from gauge invariance. Assuming completeness of the standard model the top quark mass can be predicted. Effectively only the W-bosons contribute, giving a lowest order prediction of 85.1 GeV for the mass of top quark, on the low side of currently accepted estimates. 
J. J. Lodder