1. Periodontal Research Group & MRC Centre for Immune Regulation Birmingham Dental School; Birmingham UK
2. ACTA; Amsterdam The Netherlands
3. University of Kiel; Kiel Germany
4. University of Complutense; Madrid Spain
5. Hadassah Medical Centers; Jerusalem Israel
6. University of Athens; Athens Greece
7. Ramban Medical Center; Haifa Israel
8. University College London; London UK
9. University of Louisville; Louisville KY USA
10. University of Grönign; Grönign The Netherlands
11. Yeditepe University; Istanbul Turkey
12. University of Marburg; Marburg Germany
13. Catholic University; Leuven Belgium
14. University of Turin; Turin Italy
15. University of Pisa; Pisa Italy