(1)
YƔbar V, C.; Salvatierra F, J.; Quijano, E. Envelope Genetic Variability of HIV-1 Infecting Human Groups With Differents Risk Sexual Behaviour to Adquire HIV-STD. Rev Peru Med Exp Salud Publica 2007, 24 (3). https://doi.org/10.17843/rpmesp.2007.243.1108.