1. Mason JB, Choi SW. Folate and carcinogenesis: developing a unifying hypothesis. Adv Enzym Regul. 2000;40:127–41.
2. Ulrich CM, Potter JD. Folate and cancer-timing is everything. JAMA. 2007;297:2408–9. https://doi.org/10.1001/jama.297.21.2408.
3. World Cancer Research Fund; American Institute for Cancer Research. Diet, nutrition, physical activity and breast cancer. Continuous Update Project Expert Report. 2018.
4. U.S. Department of Agriculture, Agriculture Research Service. USDA National Nutrient Database for Standard Reference, Release 25. 2012.
5. Shane B. Folate chemistry and metabolism. In: Bailey LB, ed. Folate in health and disease. New York: Marcel Dekker, 1995. pp 1-22.