1. Novartis Institutes for Biomedical Research Novartis Campus 4002 Basel Switzerland
2. EMBL Grenoble 71 Avenue des Martyrs, CS 90181 38042 Grenoble, CEDEX 9 France
3. ALPX 71 Avenue des Martyrs, CS 90181 38042 Grenoble, CEDEX 9 France
4. Institut für Pharmazie Philipps-Universität Marburg Marbacher Weg 6 35032 Marburg Germany