1. Otto von Guericke University Magdeburg 1 , Universitätsplatz 2, 39106 Magdeburg, Germany
2. Martin Luther University Halle-Wittenberg, University Medicine Halle 2 , 06120 Halle, Germany
3. Shimadzu Europa GmbH 3 , Albert-Hahn Straße 6-10, 47269 Duisburg, Germany
4. P. N. Lebedev Physical Institute of the Russian Academy of Sciences 4 , 53 Leninskiy Prospekt, 119991 Moscow, Russia