NIECIECKA, Adrianna; KĘDZIORA-KORNATOWSKA, Kornelia; LAMCH, Magdalena; JABŁOŃSKA, Monika; BŁASIK, Natalia; WÓJCIK, Agata. 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: 30 apr. 2025.