1. Clinical Institute of Medical and Chemical Laboratory Diagnosis, Medical University of Graz, Auenbruggerplatz 30, 8036 Graz, Austria
2. Clinical Institute of Medical and Chemical Laboratory Diagnosis, Medical University of Graz, Graz, Austria
3. Department of Otorhinolaryngology - Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftungsprofessur, Universitätsklinikum Erlangen, Friedrich- Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
4. Department of Pathology, Otto-von- Guericke University of Magdeburg, Magdeburg, Germany