1. Institut Lorrain du Coeur et des Vaisseaux, Vandoeuvre, France.
2. Pasteur Institute, Lille, France.
3. City Hospital, Birmingham, UK.
4. 12 de Octubre Hospital, Madrid, Spain.
5. University of Gothenburg, Gothenburg, Sweden.
6. Ghent University, Ghent, Belgium.
7. Adelaide and Meath Hospital, Dublin, Ireland.
8. Frankfurt University, Frankfurt, Germany.
9. University of Milan-Bicocca, Milan, Italy.
10. Brigham and Women's Hospital, Boston, USA.
11. University of Zagreb, Zagreb, Croatia.
12. University of Ulm Medical School, Ulm, Germany.