1. Erasmus Hospital, Free University of Brussels, Brussels, Belgium;
2. Clinique Saint Jean, Brussels, Belgium;
3. Clinique Sainte Marie, Osny, France;
4. Policlinique, Bois Bernard, France;
5. Clinique de Saint-Omer, Blendecques, France;
6. CHR d’Orleans, Orleans, France;
7. Clinique St Hilaire, Rouen, France;
8. Clinique Tivoli, Bordeaux, France;
9. Cliniques universitaires Saint Luc, Brussels, Belgium;
10. Hopital privé Loire, Saint Etienne, France;
11. Clinique Saint-Charles, La Roche-sur-Yon, France;
12. Clinique du Croisé Laroche, Marcq-en-Baroeul, France;
13. CHU UCL Namur - site Godinne, Yvoir, Belgium;
14. Hôpital Jacques Monod, Le Havre Cedex, France;
15. CHWapi (Site Notre Dame), Tournai, Belgium