Supplementary_1 - A systematic review and meta-analysis of the association between vitamin A intake, serum vitamin A, and risk of liver cancer

Supplementary_1 for A systematic review and meta-analysis of the association between vitamin A intake, serum vitamin A, and risk of liver cancer by Nattawut Leelakanok, Ronilda R. D’Cunha, Grerk Sutamtewagul, and Marin L. Schweizer in Nutrition and Health