1. PharmaCenter Bonn,
Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
2. Life and Medical
Sciences (LIMES) Institute, Immunology and Environment, University of Bonn, Carl-Troll-Straße 31, 53115 Bonn, Germany
3. Department of Pharmacology and Toxicology, University of Bonn, 53105 Bonn, Germany