Sierocka, Aleksandra, and Michał Marczak. “‘The Method of Black spots’ in Risk Management of Adverse Events – With the Example of a Research Hospital”. Polish Journal of Public Health 122, no. 2 (April 1, 2012): 118–124. Accessed August 3, 2025. https://czasopisma.umlub.pl/pjph/article/view/1560.