Niedziałek, Joanna, Marta Pachla, Aleksandra Kordyga, Łukasz Proć, Ewelina Soroka, and Marcin Olajossy. 2019. “Irritable Bowel Syndrome – Psychiatric Issues”. Current Problems of Psychiatry 20 (1): 35-48. https://doi.org/10.2478/cpp-2019-0003.