1. F. Hoffmann-La Roche, Basel, Switzerland
2. Institute of Statistics, Ulm University, Ulm, Germany
3. Clinical Trials Unit, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
4. Novartis Pharma AG, Basel, Switzerland
5. Merck KGaA, Darmstadt, Germany
6. Bayer AG, Wuppertal, Germany
7. Janssen-Cilag GmbH, Neuss, Germany
8. Bristol-Myers-Squibb GmbH & Co. KGaA, München, Germany
9. Pfizer, Berlin, Germany
10. Boehringer Ingelheim Pharma GmbH & Co. KG, Ingelheim, Germany
11. Eli Lilly and Company, Indianapolis, IN
12. Department of Medical Statistics, University Medical Center Göttingen, Göttingen, Germany