affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University Hospital Erlangen, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Maria Hilf Kliniken, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Cologne - University Hospital of Cologne, affiliation not provided to SSRN, University of Cologne - University Hospital of Cologne, University of Cologne, University Hospital Magdeburg, affiliation not provided to SSRN, Asklepios Tumorzentrum Hamburg, Jena University - Jena University Hospital, affiliation not provided to SSRN, University of Göttingen - University Medical Centre, affiliation not provided to SSRN, affiliation not provided to SSRN, Goethe University Frankfurt and affiliation not provided to SSRN