Boiarska, L. et al. 2022. The role of laryngopharyngeal reflux in the development of nasopharyngeal manifestations of GERD in preschoolers. Journal of Education, Health and Sport. 12, 4 (Apr. 2022), 127–139. DOI:https://doi.org/10.12775/JEHS.2022.12.04.011.