mRNA-Expression of <em>KRT5</em> and <em>KRT20</em> Defines Distinct Prognostic Subgroups of Muscle-Invasive Urothelial Bladder Cancer Correlating with Histological Variants oleh Markus Eckstein, Ralph Markus Wirtz, Matthias Gross-Weege, Johannes Breyer, Wolfgang Otto, Robert Stoehr, Danijel Sikic, Bastian Keck, Sebastian Eidt, Maximilian Burger, Christian Bolenz, Katja Nitschke, Stefan Porubsky, Arndt Hartmann, Philipp Erben