Santos, E., Ferreira, R.J.O., Marques, A.A., Sousa, L. and Marques, A. 2021. Cost analysis of the first wave of the COVID-19 pandemic on human resource management in a Portuguese hospital. Journal of Nursing Referência. 5, 8, Supl. 8 (Dec. 2021), 1–6. DOI:https://doi.org/10.12707/RV21031.