Dual infection with human immunodeficiency virus type 1 of distinct envelope subtypes in humans.
Artenstein AW, VanCott TC, Mascola JR, Carr JK, Hegerich PA, Gaywee J, Sanders-Buell E, Robb ML, Dayhoff DE, Thitivichianlert S, et al. Dual infection with human immunodeficiency virus type 1 of distinct envelope subtypes in humans. J Infect Dis. 1995 Apr; 171(4):805-10.