1. Core Competence Metabolomics, Hilde-Mangold-Haus, University of Freiburg, 79104 Freiburg, Germany
2. Institute of Organic Chemistry, University of Freiburg, 79104 Freiburg, Germany
3. Hermann Staudinger Graduate School, University of Freiburg, 79104 Freiburg, Germany
4. Center for Complementary Medicine, Department of Internal Medicine II, University Hospital, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
5. Institute of Medical Microbiology and Hygiene, Faculty of Medicine, Medical Center—University of Freiburg, 79104 Freiburg, Germany
6. Centre for Research Services, University of Namibia, Private Bag, Mandume, Ndemufayo Avenue, Pioneers Park, Windhoek 13301, Namibia
7. Department of Pharmaceutical Sciences, University of Basel, 4056 Basel, Switzerland
8. BIOSS Centre for Biological Signalling Studies, University of Freiburg, 79104 Freiburg, Germany