1. Pharmaceutical Biology, Pharmacenter, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
2. Center for Complementary Medicine, Institute for Infection Prevention and Hospital Epidemiology, Faculty of Medicine, University of Freiburg, Breisacher Straße 115 B, 79106 Freiburg, Germany
3. Pharmacenter, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland