Absence of HIV-2 in Spanish Groups at Risk for HIV-1 Infection

1. Estébanez, P.
2. Sarasqueta, C.
3. Rua-Figueroa, M.
4. Fitch, K.
5. Eugenia, P.V.
6. Varela, J.M.
7. Contreras, G.
8. Casado, C.
9. Pérez, L.
10. Nájera, R.