Kowalski, S. ., Moskal, A. ., Żak-Kowalska, K. ., & Goniewicz, M. . (2020). Return of spontaneous circulation and heart rhythm during the first analysis of the heart electrical activity. Nursing in the 21st Century, 18(3(68), 147-150. https://doi.org/10.2478/pielxxiw-2019-0021