Julia Kular, Oliwia Malec, Izabella Michalska, Maciej Karwat, Mateusz Myśliwiec, Justyna Niebylecka, Natalia Glanc, Tytus Tyralik, Grzegorz Zalewski and Dominik Sendecki 2025. EFFICACY OF FECAL MICROBIOTA TRANSPLANTATION IN TREATING GASTROINTESTINAL DISEASES: A SYSTEMATIC REVIEW OF EVIDENCE IN CDI, UC, IBS, AND CROHN’S DISEASE. International Journal of Innovative Technologies in Social Science. 6, 3(47) (Sep. 2025). DOI:https://doi.org/10.31435/ijitss.3(47).2025.3752.