Known history of HIV infection Known history of HIV. A known history of HIV Has known HIV Known positiv test for HIV Known HIV infection. Known HIV infection. Known history of HIV Known HIV-infected patients Patients with known HIV disease Known history of HIV infection. Patients with a known history of HIV. HIV infection or a known HIV-related malignancy. Subject has known HIV infection Known to be HIV+ Known HIV infection. Known infection with HIV (testing of patients not known to be infected with HIV is not required prior to study entry) ARM B: Known HIV infection Known history of infection with HIV. Known history of infection with HIV. Subjects with known HIV infection HIV related disease or known or suspected HIV+ Known HIV infection. Known carrier of HIV. Known HIV carrier Known infection with HIV Known HIV infection; Patients with known HIV. Known HIV infection Has a known history of HIV. Known HIV infection Known HIV infection. Known HIV infection Known HIV infection. Subjects with known HIV infection Known HIV infection Known history of HIV infection. Known HIV infection. Known HIV infection HIV infection with a last known or suspected CD count of