Moqbil, S., S. . Niedobylski, K. Laszczak, K. Warchoł, and E. Mikos. “The Gut Microbiota and Mental Health”. Journal of Education, Health and Sport, vol. 11, no. 9, Sept. 2021, pp. 304-9, doi:10.12775/JEHS.2021.11.09.037.