Michalak, A.; Kasztelan-Szczerbinska, B.; Laskowska, K.; Radwan, P.; Cybulski, M.; Cichoż-Lach, H. Efficacy of Biological Treatment in Inflammatory Bowel Disease – a Single-Center Experience. Pol J Public Health 2020, 129 (3), 105-109. https://doi.org/10.2478/pjph-2019-0024.