FARZADEGAN, H. Detection of human immunodeficiency virus type 1 infection by polymerase chain reaction in a cohort of seronegative intravenous drug users. J Infect Dis. 1993, 168, 327-331
GIBBONS, J. Silent infections with human immunodeficiency virus type 1 are highly unlikely in multitransfused seronegative hemophiliacs. Blood. 1990, 76, 1924-1926
HARRER, T. Inhibition of HIV-1-specific T-cells and increase of viral load during immunosuppressive treatment in an HIV-1 infected patient with Chlamydia trachomatis induced arthritis. J Clin Virol. 2005, 34, 224-230