Seronegative secondary syphilis in 2 patients coinfected with human immunodeficiency virus.
Kingston AA, Vujevich J, Shapiro M, Hivnor CM, Jukic DM, Junkins-Hopkins JM, Jih DM, Kostman JR, James WD. Seronegative secondary syphilis in 2 patients coinfected with human immunodeficiency virus. Arch Dermatol. 2005 Apr; 141(4):431-3.