Kowalczyk, K., K. Ożóg, J. Klęba, I. Kucharska-Miąsik, A. Guzik, and W. Guz. “The importance of ultrasonography examination in renal abscesses in pediatric patients”. European Journal of Clinical and Experimental Medicine, vol. 22, no. 3, Sept. 2024, pp. 582–588, doi:10.15584/ejcem.2024.3.18.