Christo, Paulo Pereira, Dirceu Bartolomeu Greco, Agdemir Waleria Aleixo, and Jose António Livramento. 2011. “ Analysis of Correlation Between Cerebrospinal Fluid and Plasma HIV-1 RNA Levels in Patients With Neurological Opportunistic Diseases ”. Revista Do Instituto De Medicina Tropical De São Paulo 53 (4): 193-96. https://revistas.usp.br/rimtsp/article/view/31404.