L. Augusto, N. Neves, C. Reis, C. Abreu, and A. Sarmento, “Clinical and Radiological Characterization of Progressive Multifocal Leukoencephalopathy in HIV-Infected Patients: A Retrospective Analysis and Review of the Literature”, Acta Med Port, vol. 28, no. 3, pp. 286–296, Apr. 2015.