Jahnz-Różyk K, Zarzycka J. Patients’ profiles in whom it is worth to use oral oral immunization with bacterial extract to prevent respiratory infections. J EBM [Internet]. 2017Sep.30 [cited 2024May17];10(3(36):289-92. Available from: https://journalsmededu.pl/index.php/jebm/article/view/2141