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Murff HJ, Roumie CL, Greevy RA, Hackstadt AJ, McGowan LED, Hung AM, Grijalva CG, Griffin MR. Metformin use and incidence cancer risk: evidence for a selective protective effect against liver cancer. Cancer causes & control : CCC. 2018 Sep;29(29). 823-832. NIHMSID: NIHMS1500265.
Abstract
Several observational studies suggest that metformin reduces incidence cancer risk; however, many of these studies suffer from time-related biases and several cancer outcomes have not been investigated due to small sample sizes.