1. Duke University; Durham NC USA
2. Momentum Research Inc.; Durham NC USA
3. University of Hull; Kingston upon Hull UK
4. Duke Clinical Research Institute; Durham NC USA
5. University of California at San Francisco and San Francisco Veterans Affairs Medical Center in San Francisco; CA USA
6. University of Brescia; Brescia Italy
7. University of Groningen; Groningen The Netherlands
8. University of Buenos Aires; Buenos Aires Argentina
9. Cardiology Research Center; Moscow Russia
10. Institute of Clinical Cardiology; Moscow Russia
11. Hadassah Medical Organization Ein-Karem; Jerusalem Israel
12. Merck Research Laboratories; Rahway NJ USA
13. Brigham and Women's Hospital; Boston MA USA
14. Medical University, Clinical Military Hospital; Wroclaw Poland