Jamer , T. “Influence of Microbiome Modification on the child’s Immune System – a Review of Selected Substances and Own Observations of Polish Patients”. Medycyna I Życie, Vol. 7, no. 3-4, Dec. 2020, pp. 33-47, https://journalsmededu.pl/index.php/medycyna_i_zycie/article/view/1128.