1. University Medical Center Groningen; Groningen The Netherlands
2. University of California at San Francisco and San Francisco Veterans Affairs Medical Center; San Francisco CA USA
3. Duke Clinical Research Institute; Duke University Medical Center; Durham NC USA
4. University of Brescia; Brescia Italy
5. Medical University; Clinical Military Hospital; Wroclaw Poland
6. Momentum Research; Durham NC USA
7. University of Hull; Kingston upon Hull; UK
8. Brigham and Women's Hospital, Harvard Medical School; Boston MA USA
9. Merck Research Laboratories; Rahway NJ USA
10. NovaCardia; San Diego CA USA