Neurocognitive impairment in HIV-infected individuals with previous syphilis. - Marra, C M; Deutsch, R; Collier, A C; Morgello, S; Letendre, S; Clifford, D; Gelman, B; McArthur, J; McCutchan, J A; Simpson, D M; Duarte, N A; Heaton, R K; et al. (International Journal of STD & AIDS, 2013)