1. Cliniques Universitaires Sant Luc , Brussels, Belgium
2. Hospital de Mérida, Mérida, Spain
3. Oxford University Hospitals , London, United Kingdom
4. University Hospital München, Munich, Germany
5. University Hospital of Augsburg , Augsburg, Germany
6. Hospital Clínic de Barcelona, Barcelona, Spain
7. University Hospital 'TsaritsaYoanna , Sofia, Bulgaria
8. Centro di Rifermento Oncologico, Aviano, Italy
9. Hospital Hospital Center Zagreb , Zagreb, Croatia
10. Groote Schuur Hospital , Cape Town, South Africa