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26. Antinori A, Arendt G, Becker JT, Brew BJ, Byrd DA, Cherner M, Clifford DB, Cinque P, Epstein LG, Goodkin K, Gisslen M, Grant I, Heaton RK, Joseph J. Marder K, Marra CM, McArthur JC, Nunn M, Price RW, Pulliam L, Robertson KR, Sacktor N, Valcour V, Wojna VE. Updated research nosology for HIV-associated neurocognitive disorders. Neurology 2008; 69(18): 1789-99. 
27. Letendre SL, FitzSimons C, Ellis RJ, Clifford D, Collier AC, Gelman B, Marra C, Macarthur J, McCutchan JA, Morgello S, Simpson D, Vaida F, Heaton R, Grant I, and the CHARTER Group. Correlates of CSF Viral Loads in 1,221 volunteers of the CHARTER cohort. 17th Conference on Retroviruses and Opportunistic Infections, 2010. 
28. Cystique LA, Vaida F, Letendre S, Gibson S, Cherner M, Woods SP,  McCutchan JA,  Heaton RK, Ellis RJ. Dynamics of cognitive change in impaired HIV-positive patients initiating antiretroviral therapy. Neurology 2009; 73(5), 342-8. 
29. In a conversation with Dr. Bruce Brew, 2012. 
30. Letendre SL, FitzSimons C, Ellis RJ, Clifford D, Collier AC, Gelman B, Marra C, Macarthur J, McCutchan JA, Morgello S, Simpson D, Vaida F, Heaton R, Grant I, and the CHARTER Group. Correlates of CSF Viral Loads in 1,221 volunteers of the CHARTER cohort. 17th Conference on Retroviruses and Opportunistic Infections, 2010.  {ref} (Table 7). Use of this tool is controversial with studies yielding mixed results, some with greater benefit than others {ref} Eggers CArendt GHahn K,Husstedt IWMaschke MNeuen-Jacob EObermann MRosenkranz TSchielke EStraube EGerman Association of Neuro-AIDS und Neuro-Infectiology (DGNANI). (2017).HIV-1-associated neurocognitive disorder: epidemiology, pathogenesis, diagnosis, and treatment. Journal of Neurology, Aug;264(8):1715-1727. doi: 10.1007/s00415-017-8503-2. Epub 2017 May 31. 
31.  Cusini A, Vernazza PL, Yerly S, Decosterd LA, Ledergerber B, Fux CA, Rohrbach J, Widmer N, Hirschel B, Gaudenz R, Cavassini M, Klimkait T, Zenger F, Gutmann C, Opravil M, Gunthard HF, Swiss HIVCS (2013) Higher CNS penetration-effectiveness of long-term combination antiretroviral therapy is associated with better HIV-1 viral suppression in cerebrospinal fluid. Journal of the Acquired Immune Deficiency Syndrome Human Retroviroogy,l 62:28–35;  Cysique LA, Waters EK, Brew BJ (2011). Central nervous system antiretroviral efficacy in HIV infection: a qualitative and quantitative review and implications for future research. BMC Neurology, 11:148 
32. Carroll, A & Brew, B. (2017). HIV-associated neurocognitive disorders: recent advances in pathogenesis, biomarkers, and treatment. F1000Research, 6: 312. Published online 2017 Mar 23. doi: 10.12688/f1000research.10651.1 . 
33. Robertson KR, Su Z, Margolis DM, Krambrink A, Havlir DV, Evans S, Skiest, D.J. For the A5170 Study Team.  Neurocognition effects of treatment interruption in stable HIV-positive patients in an observational cohort. Neurology 2010; 74: 1260-1266. 
34. Skinner S, Adewale AJ, DeBlock L, Gill MJ, Power C. Neurocognitive screening tools in HIV/AIDS: comparative performance among patients exposed to antiretroviral therapy. British HIV Association HIV Medicine 2009;10; 246-252 
35. Robertson KR, Su Z, Margolis DM, Krambrink A, Havlir DV, Evans S, Skiest, D.J. For the A5170 Study Team.  Neurocognition effects of treatment interruption in stable HIV-positive patients in an observational cohort. Neurology 2010; 74: 1260-1266. 
36. Skinner S, Adewale AJ, DeBlock L, Gill MJ, Power C. Neurocognitive screening tools in HIV/AIDS: comparative performance among patients exposed to antiretroviral therapy. British HIV Association HIV Medicine 2009;10; 246-252