P. Vasilev, T. Velyanova, . I. Baltadzhiev, and M. Stoycheva, “COMPARATIVE ASSESSMENT OF THE NUMBER AND IMMUNOLOGICAL STATUS OF NEWLY DIAGNOSED AND RE-ENROLLED IN CARE HIV+ IN THE PERIOD 2018–2019 AND 2020-2021”, Probl Infect Parasit Dis, vol. 50, no. 1, pp. 12–18, Oct. 2022, doi: 10.58395/pipd.v50i1.80.