“…About 60%-89% of hepatocellular carcinoma is associated with underlying cirrhosis 26,28,54,56,[63][64][65] , while the prevalence of hepatocellular carcinoma complicating cirrhosis is between 2.2% and 73% 13,15,26,54,56,65 . Although chronic hepatitis B virus (HBV) and hepatitis C virus (HCV) infection have been implicated as the major risk factors for cirrhosis 3,11,12,20,53,54,61,62 , some cirrhosis occurs in patients without serologic evidence of HBV/HCV infection 1,5,10,14,16,18,37,38,53,60 , suggesting that other viruses, environmental factors, or differences in lifestyle habits are also important. To prevent cirrhosis-associated mortality and morbidity, exploration of risk factors other than HBV/HCV is urgent.…”