1. Cancer Research Center Lyon, INSERM U1052 and CNRS 5286; Lyon University; Lyon France
2. Hospices Civils de Lyon; Lyon France
3. Institute of Pathology; University of Cologne; Cologne Germany
4. Department of Clinical Research; University of Bern; Bern Switzerland
5. Department of Chemistry and Biochemistry; University of Bern; Bern Switzerland
6. Clinical Institute of Pathology; Medical University of Vienna; Vienna Austria