1. Willi Woessmann, Martin Zimmermann, Meike Lenhard, Birgit Burkhardt, and Alfred Reiter, Non-Hodgkin's Lymphoma–Berlin-Frankfurt-Muenster Study Center and Justus-Liebig-University, Giessen; Claudia Rossig, University Children's Hospital Muenster, Muenster; Bernhard Kremens, University Hospital of Essen, Essen; Peter Lang, Eberhard Karls-University, Tuebingen; Ilske Oschlies and Wolfram Klapper, University Hospital Schleswig-Holstein, Campus Kiel/Christian-Albrechts-University, Kiel, Germany; and Andishe...