1. University of Würzburg, Institute of Pharmacy and Food Chemistry, Am Hubland, DE-97074 Würzburg, Germany
2. University of Würzburg, Department of Biochemistry and Cancer Therapy Research Center (CTRC), Theodor-Boveri-Institute, Am Hubland, DE-97074 Würzburg, Germany
3. Bruker Switzerland AG, Industriestrasse 26, CH-8117 Fällanden, Switzerland