Smuczyński, Wojciech, Maciej Śniegocki, Kamila Woźniak, Zygmunt Siedlecki, Aleksandra Pawlicka, and Marcin Grela. 2014. “Pain Caused by the Iliopsoas Muscle Injury. Case Study”. Medical and Biological Sciences 27 (4):59-61. https://doi.org/10.12775/mbs-2013-0037.