CĄKAŁA, Marlena, KOZIOŁ, Magdalena, BŁASZCZAK, Karolina, PODGÓRNIAK, Kamila, PIOTROWSKA, Julia, SKOTNICKA, Joanna, ZAJKOWSKA, Aleksandra and WITKOWSKA, Maria. The role of lactoferrin in the treatment of upper respiratory tract infections. Quality in Sport. Online. 2 August 2024. Vol. 17, p. 53395. [Accessed 7 February 2025]. DOI 10.12775/QS.2024.17.53395.