Ivanova A, Tsvetkova N, Harizanov R, Borisova R. STUDY OF THE DISTRIBUTION OF PNEUMOCYSTOSIS IN BULGARIA BETWEEN SEPTEMBER 2017 AND APRIL 2019 BY USING REAL- TIME PCR. Probl Infect Parasit Dis. 2019;47(2):24-27. doi:10.58395/pipd.v47i2.8