- Known HIV disease; an HIV test is not required for entry on study but is required if the patient is perceived to be at risk; patients with a history of intravenous drug use or any other behavior with an increased risk for HIV infection should be tested for exposure to the HIV virus; patients with known HIV are excluded since the immunocompromised state of patients with HIV infection or the concomitant use of highly active antiretroviral therapy (HAART) may result in more extensive dose modifications than intended for the intensive therapeutic regimen used in this study