1 Center for Complementary Medicine, Department of Medicine II, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Hugstetter Straße 55 - Haus Frerichs, 79106, Freiburg, Germany. ann-kathrin.lederer@uniklinik-freiburg.de.
2 Department of General, Visceral and Transplantation Surgery, University Medical Center, Mainz, Germany. ann-kathrin.lederer@uniklinik-freiburg.de.
3 Institute of Immunology, Section Molecular Immunology, University Hospital of Heidelberg, Heidelberg, Germany.
4 Institute of Pharmacology of Natural Products & Clinical Pharmacology, Ulm University, Ulm, Germany.
5 Center for Complementary Medicine, Department of Medicine II, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Hugstetter Straße 55 - Haus Frerichs, 79106, Freiburg, Germany.