Żukowska, M., A. Fabian-Danielewska, K. Korabiusz, M. Stecko, and A. Wawryków. “Perioperative Management. Nutrition in the Perioperative Period”. Journal of Education, Health and Sport, vol. 9, no. 7, June 2019, pp. 24-29, https://apcz.umk.pl/JEHS/article/view/7072.