About VASSILENKO S M
About Inst. Infectious and parasitic Diseases, Sofia, BGR
About VASSILEV T L
About Inst. Infectious and parasitic Diseases, Sofia, BGR
About BOZADJIEV L G
About Inst. Infectious and parasitic Diseases, Sofia, BGR
About BINEVA I L
About Inst. Infectious and parasitic Diseases, Sofia, BGR
About KAZAROV G Z
About Inst. Infectious and parasitic Diseases, Sofia, BGR
About Lancet