1. Institute of Pharmaceutical Sciences, University of Freiburg, 79104 Freiburg im Breisgau, Germany
2. Department of Chemistry-Ångström, Uppsala University, 75237 Uppsala, Sweden
3. Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada
4. Signaling Research Centers BIOSS and CIBBS, University of Freiburg, 79104 Freiburg im Breisgau, Germany
5. Andreas Hettich GmbH & Co. KG, 78532 Tuttlingen, Germany