22 (9): 1958–1972. doi:10.1093/annonc/mdq653. PMID 21307158. ↑ Risk Factors ↑ What Are the Risk Factors for Liver Cancer? ↑ Risk Factors Archived 23 February 2009 at the Wayback Machine. ↑ Liver Cancer: The Basics ↑ Liver Cancer Archived 28 July 2011 at the Wayback Machine. ↑ Takada, Akira; Shujiro Takase; Mikihiro Tsutsumi (1992). "Alcohol and Hepatic Carcinogenesis".