The precore mutation is associated with severity of liver damage in Brazilian patients with chronic hepatitis B - Rezende, Rosamar E. F.; Fonseca, Benedito Antonio Lopes da; Ramalho, Leandra Naíra Zambelli; Zucoloto, Sérgio; Pinho, João Renato R.; Bertolini, Dennis A.; Martinelli, Ana Lourdes Candolo (Journal of Clinical Virology, 2005)