1. Boehringer Ingelheim Pharma GmbH & Co. KG; Birkendorfer Str. 65 88397 Biberach an der Riss Germany
2. Kobe Pharma Research Institute; Nippon Boehringer Ingelheim Co. Ltd.; Chuo-ku Kobe City Japan
3. Boehringer Ingelheim Pharmaceuticals Inc.; 900 Ridgebury Road Ridgefield CT 06877 USA
4. Friedrich-Alexander-Universität Erlangen-Nürnberg; Institute of Experimental and Clinical Pharmacology and Toxicology; Fahrstr. 17 91054 Erlangen Germany