  We argue that the method, which was used for the analysis of equilibrium
magnetization data in the original publication, is not adequate to the
experimental situation. As a result, the temperature dependencies of the upper
critical field Hc2(T) and the magnetic field penetration depth lambda(T),
obtained in this work, are incorrect. Using a different approach, we reanalyze
the presented experimental data and demonstrate that the normalized Hc2(T)
curves are rather different from those presented in the original publication
and do not follow predictions of the Werthamer-Helfand-Hohenberg theory.
Another interesting observation is that the Hc2(T) dependencies for two samples
with close levels of doping are rather different.
