scientific article
author: Matthias Scheffler, Lukas C Heukamp, Ronald Boellaard, Adriaan A Lammertsma, Bernd Neumaier, Thomas Zander, Lucia Nogova, Carsten Kobe, Markus Dietlein, Irini Papachristou, Silvia Querings, Erich Stoelben, Walburga Engel-Riedel, Reinhard Büttner