Acute icteric hepatitis and liver failure may occur in patients with chronic delta hepatitis during interferon: A. Crosignani, P. Invernizzi, P.M. Battezzati, M. Camisasca, M. Zuin, S. Bruno, ∗F.B. Bianchi, ∘A. Manzin, M. Podda. Institute of Internal Medicine, School of Medicine Ospedale San Paolo, University of Milane; ∗Institute of Internal Medicine I, University of Bologna; ∘Institute of Microbiology, University of Ancona, Italy