1. Department of Clinical Pharmacology and Pharmacoepidemiology University of Heidelberg Heidelberg Germany
2. Boehringer Ingelheim Pharma GmbH & Co. KG Biberach an der Riss Germany
3. CTC North GmbH & Co KG University Medical Centre Hamburg Eppendorf Hamburg Germany
4. CRS Clinical Research Services Mannheim GmbH Mannheim Germany
5. Boehringer Ingelheim Pharmaceuticals, Inc. Ridgefield CT USA
6. Staburo GmbH, München, Germany on behalf of Boehringer Ingelheim Pharma GmbH & Co. KG