Pawlicki, M., A. Łopuszyńska, M. Kozioł, A. Krasa, E. Piekarska, and H. Piecewicz-Szczęsna. “Sleep Disorders in Patients With Neoplasm”. Journal of Education, Health and Sport, vol. 10, no. 9, Sept. 2020, pp. 514-9, doi:10.12775/JEHS.2020.10.09.062.