4The WHO collaborative study of neoplasia and steroid contraceptives. Combined oral contraceptives and liver cancer. Int J Cancer, 1989, 43 : 254 -259.
5Vecchia CL, Negri E, Decarli A, et al. Diabetes mellitus and the risk of primary liver cancer. Int J Cancer, 1997,73:204-207.
6Braga C, Veeehia CL, Negri E, :et al. Attributable risks for hepatocellular carcinoma in Northern Italy. Eur J Cancer,1997,33(4) :629-634.
7Donato F, Gelatti U, Chiesa R, et al. A case-control study on family history of liver cancer as a risk factor for hepatocellular carcinoma in North Italy. Cancer Causes &Control, 1999,10 : 417-421.
8Follmann M, Heinemann LA, Dipl-stat AB, et al. Treatment with Potentially Hepatotoxic Drugs and the Risk of Hepatocellular Carcinoma Results of a European Case-Control Study. Pharmacoepidemiology & Drug Safety,2000,9:306-311.
9Davila JA, Morgan RO, Shaib Y, et al. Diabetes increases the risk of hepatocellular carcinoma in the United States: a population based case control study. Gut,2005,54:533-539.
10Hassan MM, Hwang LY, Hatten C J, et al. Risk factors for hepatocellular carcinoma: Synergism of alcohol with viral hepatitis and diabetes mellitus. Hepatology ,2002,36 (5) : 1206-1213.