1. Champalimaud Foundation, Lisbon, Portugal
2. Université Libre de Bruxelles, Bruxelles, Belgium
3. University College London Hospitals Nhs Foundation Trust, London, United Kingdom
4. University Hospital of Larrisa, Larissa, Greece
5. Università degli studi di Foggia, Foggia, Italy
6. Hospital Erasme, Bruxelles, Belgium
7. Konstantopoulio General Hospital, Athens, Greece