1. University of Cologne, Faculty of Medicine and University Hospital Cologne, Center for Pharmacology, Department I of Pharmacology, Cologne, Germany
2. Department of Clinical Pharmacy, Institute of Pharmacy, University of Bonn, Bonn, Germany
3. Department of Anaesthesiology, Hospital of the Ludwig Maximilians University of Munich, Munich, Germany
4. Laboratory of Dr. Brunner, Constance, Germany
5. Division of Infectious Diseases and Hospital Epidemiology, Kantonsspital St. Gallen, St. Gallen, Switzerland