Letter: metformin reduces the risk of hepatocellular carcinoma in diabetic patients.Published in:Alimentary Pharmacology & Therapeutics, 2019, v. 50, n. 7, p. 837, doi. 10.1111/apt.15467By:Huo, Rong‐Rui;Liang, Jing‐Rong;He, Feng‐Yi;Xu, Bin‐Rong;Ma, Liang;Yuan, Wei‐PingPublication type:Article