PONIEWOZIK, Paweł, PERNAL, Maja, MIODUSZEWSKA, Joanna, ROT, Paweł, PONIEWOZIK, Piotr, DZIUBA, Natalia, SIM, Aleksandra, ZUZAK, Andrzej, ROGUSKA, Zofia and GRABOWSKI, Krzysztof. Postbiotics as effective and safe "vaccines" against various respiratory diseases: literature review. Quality in Sport. Online. 19 April 2026. Vol. 54, p. 70813 . [Accessed 21 April 2026]. DOI 10.12775/QS.2026.54.70813.