Peginterferon alfa-2a (40KD) (PEGASYS®) plus ribavirin (COPEGUS®) in retreatment of chronic hepatitis C patients, nonresponders and relapsers to previous conventional interferon pl... oleh E. Parise, H. Cheinquer, D. Crespo, A. Meirelles, A. Martinelli, H. Sette, J. Gallizi, R. Silva, C. Lacet, E. Correa, H. Cotrim, J. Fonseca, R. Paraná, V. Spinelli, W. Amorim, F. Tatsch, M. Pessoa