1. University of Tuebingen, Tuebingen, Germany
2. Hospital Clinic de Barcelona, Barcelona, Spain
3. Institut d'investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
4. University Hospital Tuebingen, Tuebingen, Germany
5. University Hospital Tübingen, Tübingen, Germany
6. Hospital Clínic de Barcelona
7. Universtiy Hospital Tübingen
8. Mayo Clinic Arizona, Scottsdale, Arizona, United States
9. University Hospital and Comprehensive Cancer Center Tuebingen, Institute of Pathology and Neuropathology, Tuebingen, Germany
10. University Hospital and Comprehensive Cancer Center Tuebingen, Tuebingen, Germany
11. Mayo Clinic, Scottsdale, Arizona, United States
12. Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
13. Hospital Clinic, Barcelona, Spain