I. Philipova, E. Birindjieva, A. Milanov, and S. Stoitsova, “PREVALENCE OF PHARYNGEAL AND RECTAL CHLAMYDIA TRACHOMATIS AND NEISSERIA GONORRHOEAE INFECTIONS AMONG MSM IN SOFIA, BULGARIA”, Probl Infect Parasit Dis, vol. 50, no. 1, pp. 19–24, Oct. 2022, doi: 10.58395/pipd.v50i1.88.