Topotecan in the Treatment of Acquired Immunodeficiency Syndrome-Related Progressive Multifocal Leukoencephalopathy. - Royal III, W.; Dupont, B.; McGuire, D.; Chang, L.; Goodkin, K.; Ernst, T.; Post, M.J.; Fish, D.; Pailloux, G.; Poncelet, H.; Concha, M.; Apuzzo, L.; et al. (Journal of NeuroVirology, 2003)