1. Airedale NHS Foundation Trust, West Yorkshire, UK
2. Policlinico Tor Vergata, Rome, Italy
3. Hospital Barmherzige Brüder, Regensburg, Germany
4. Azienda Ospedaliera Careggi, Florence, Italy
5. Hospital Universitario La Paz, Madrid, Spain
6. Universitätsklinikum, Regensburg, Germany