1. Castel AD, Wilbourn B, Magnus M, Greenberg AE. SARS-COV-2 and HIV: Epidemiology, treatment, and lessons learned from HIV. AIDS Rev Publicaciones Permanyer. 2020;22:133–42.
2. Poland: Coronavirus Pandemic Country Profile-Our World in Data [Internet]. [cited 2021 Nov 15] https://ourworldindata.org/coronavirus/country/poland.
3. Wang L, Sun Y, Yuan Y, Mei Q, Yuan X. Clinical challenges in cancer patients with COVID-19: aging, immunosuppression, and comorbidities. Aging (Albany NY) [Internet]. 2020(cited 2021 Nov 15, /pmc/articles/PMC7762454/);12:2462 .
4. Ssentongo P, Heilbrunn ES, Ssentongo AE, Advani S, Chinchilli VM, Nunez JJ, et al. Epidemiology and outcomes of COVID-19 in HIV-infected individuals: a systematic review and meta-analysis. Sci Rep [Internet]. 2021 (cited 2021 Aug 20],/pmc/articles/PMC7973415/);11:6283. Accessed 20 Aug 2021
5. Lee KW, Yap SF, Ngeow YF, Lye MS. Covid-19 in people living with hiv: A systematic review and meta-analysis. Int J Environ Res Public Health. 2021;18:3554.