1. Mayo Clinic, Gonda 6 South, 200 1st Street, SW, Rochester, MN, USA
2. Duke University Medical Center, Durham, NC, USA
3. I.R.C.C.S. Policlinico San Donato, Milan, Italy
4. University of Southern California, Los Angeles, CA, USA
5. Northwestern University Feinberg School of Medicine, Chicago, IL, USA
6. Ospedali Riuniti di Bergamo, Bergamo, Italy
7. Medical University of Silesia, Katowice, Poland
8. Toronto General Hospital, Toronto, Canada
9. Cedars-Sinai Medical Center, Los Angeles, CA, USA
10. Slaski Osrodek Kardiologii AM, Katowice, Poland
11. Research Institute of Circulation Pathology, Novosibirsk, Russia
12. Medical University of Gdansk, Gdansk, Poland
13. Montreal Heart Institute and Université de Montréal, Montreal, Canada