Stepanović, Aleksandar, Tatjana Arsenijevic, Vesna Stankovic, Vukac Vujanac, Anja Lazovic, Raonic-StevanovicTanja, and Marina Nikitovic. “Clinical Analysis of COVID-19 Positive Cancer Inpatients in National Cancer Center in Serbia”. The Journal of Infection in Developing Countries 15, no. 09 (September 30, 2021): 1286-1292. Accessed August 17, 2022. https://jidc.org/index.php/journal/article/view/34669598.