Insulin and insulin-like growth factor-1 stimulate proliferation and type 1 collagen accumulation by human hepatic stellate cells: differential effects on signal transduction pathways. - Svegliati-Baroni,G.; Ridolfi,F.; di Sario,A.; Casini,A.; Marucci,L.; Gaggiotti,G.; Orlandoni,P.; Macarri,G.; Perego,L.; Benedetti,A.; Folli,F. (Hepatology, 1999)