NIECIECKA, A.; KĘDZIORA-KORNATOWSKA, K.; LAMCH, M.; JABŁOŃSKA, M.; BŁASIK, N.; WÓJCIK, A. Analysis of the causes of vitamin B12 deficiency in different age groups - a review of the literature. Journal of Education, Health and Sport, [S. l.], v. 13, n. 2, p. 81–92, 2022. DOI: 10.12775/JEHS.2023.13.02.011. Disponível em: https://apcz.umk.pl/JEHS/article/view/40901. Acesso em: 18 apr. 2024.