Dräger, Bianca; Deppe, Michael; Mohammadi, Siawoosh; Keller, Simon S.; Kugel, Harald; Grégor, Nora; Evers, Stefan; Young, Peter; Ringelstein, Erich B.; Arendt, Gabriele; Arendt, G.: Early microstructural white matter changes in patients with HIV: A diffusion tensor imaging study