Alexiev, I.,
Shankar, A.,
Dimitrova, R.,
Gancheva, A.,
Kostadinova, A.,
Teoharov, P.,
Golkocheva, E.,
Nikolova, M.,
Mihtarova, M.,
Elenkov, I.,
Stoycheva, M.,
Nikolova, D.,
Varleva, T., &
Switzer, W.
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Origin and spread of HIV-1 in persons who inject drugs in Bulgaria. Infection, Genetics and Evolution; Infection, Genetics and Evolution.