Tsvetkova, N. , Ivanova, R. , Rainova, I. , Yancheva-Petrova, N. , Strashimirov, D. , Enikova, R. , Videnova, M. , Kaneva, E. , Kaftandjiev, I. , Levterova, V. , Simeonovski, I. , Yanev, N. , Hinkov, G. (2023), 'Study on the Presence of Protozoal Coinfections among Patients with Pneumocystis jirovecii Pneumonia in Bulgaria', World Academy of Science, Engineering and Technology, Open Science Index 200, International Journal of Medical and Health Sciences, 17(8), 179 - 183.