1. Mayo Clinic Rochester; Rochester MN USA
2. Northwestern University Feinberg School of Medicine; Chicago IL USA
3. St. Luke's Mid America Heart Institute; 4401 Wornall Road, 5th Floor Kansas City MO 64111 USA
4. University of Colorado Denver; Denver CO USA
5. St. Louis University Health Sciences Center; St. Louis MO USA
6. Institut National de la Santé et de la Recherche Médicale (INSERM); Nancy France
7. Associazione Nazionale Medici Cardiologi Ospedalieri Research Center; Florence Italy
8. Sahlgrenska University Hospital/Östra; Gothenburg Sweden
9. Tufts-New England Medical Center; Boston MA USA