Kosydar-Bochenek J, Gurowiec PJ, Woźniak K, Mędrzycka-Dąbrowska W, Ozga D. PTSD symptoms and coping mechanism of nurses in Poland before the COVID-19 pandemic. A cross-sectional study. Pol J Public Health. 2021;131:76-81. doi:10.2478/pjph-2021-0015