Piotrowska, P., Wójcik, J., Obuchowska, A., Ozga, A., Kimber-Trojnar, Żaneta and Leszczyńska-Gorzelak, B. (2019) “Folic acid supplementation among students”, Journal of Education, Health and Sport, 9(9), pp. 492–498. Available at: https://apcz.umk.pl/JEHS/article/view/7460 (Accessed: 9 February 2023).