- Once-daily regimen of saquinavir, ritonavir, didanosine, and lamivudine in HIV-infected patients with standard tuberculosis therapy (TBQD Study). Ribera, E., Azuaje, C., Lopez, R.M., Domingo, P., Soriano, A., Pou, L., Sánchez, P., Mallolas, J., Sambea, M.A., Falco, V., Ocaña, I., Lopez-Colomes, J.L., Gatell, J.M., Pahissa, A. J. Acquir. Immune Defic. Syndr. (2005)