BOIARSKA, L. M.; HREBENIUK, L. V.; IVANOVA, K. O. An advancement of treatment of nasopharyngeal signs of gastroesophageal reflux disease in children against the background of vitamin D deficiency. Journal of Education, Health and Sport, [S. l.], v. 10, n. 5, p. 42–62, 2020. DOI: 10.12775/JEHS.2020.10.05.004. Disponível em: https://apcz.umk.pl/JEHS/article/view/JEHS.2020.10.05.004. Acesso em: 13 jun. 2026.