DUDNYK, Veronika; DEMIANYSHYNA, Valeriia. Assessment of severity of cystic fibrosis in children depending on the vitamin D status. Journal of Education, Health and Sport, [S. l.], v. 10, n. 9, p. 561–568, 2020. DOI: 10.12775/JEHS.2020.10.09.068. Disponível em: https://apcz.umk.pl/JEHS/article/view/JEHS.2020.10.09.068. Acesso em: 8 jul. 2025.