Randomized trial comparing three different regimens of alpha-2a-interferon in chronic hepatitis C - Chemello, L; Bonetti, P; Cavaletto, L; Talato, F; Donadon, V; Casarin, P; Belussi, F; Frezza, M; Noventa, F; Pontisso, P; Benvegnu, L; Casarin, C; Alberti, A; TriVeneto Viral Hepatitis Group (Hepatology, 1995)