Rogulska, K., P. Kapczuk, A. Zioło, A. Sarna, R. Jacek, and K. Grzeszczak. “Probiotics, Could Be Functional Foods?”. Journal of Education, Health and Sport, vol. 12, no. 12, Nov. 2022, pp. 113-6, doi:10.12775/JEHS.2022.12.12.017.