1) Bomba-Opon D, Hirnle L, Kalinka J, et al. Folate supplementation during the preconception period, pregnancy and puerperium. Polish Society of Gynecologists and Obstetricians Guidelines. Ginekol Pol 2017; 88: 633-636.
2) Cordero P, Gomez-Uriz AM, Campion J, et al. Dietary supplementation with methyl donors reduces fatty liver and modifies the fatty acid synthase DNA methylation profile in rats fed an obesogenic diet. Genes Nutr 2013; 8: 105-113.