Re-treatment of interferon (IFN) plus ribavirin (RBV) nonresponders with peginterferon (PEG-IFN) Alfa-2A (40KD) (Pegasys) plus RBV and amantadine (AMA) or IFN Alfa-2A (Roferon-A) plus RBV and AMA. Interim results of a multicenter randomized studyS. Brillanti, Maria Grazia Rumi, L. Cimino et al.|Journal of Hepatology|2003Cited by 2