Serial flow cytometric analyses of blood and cerebrospinal fluid in natalizumab‐associated progressive multifocal leukencephalopathy with an excellent outcome. Issue 2 (May 2015) - Pilz, Georg; Harrer, Andrea; Wipfler, Peter; Oppermann, Katrin; Sellner, Johann; Rispens, Theo; van der Kleij, Desiree; Afazel, Shahrzad; Haschke‐Becher, Elisabeth; Trinka, Eugen; Kraus, Joerg