1. Department of Orthopaedics; Medical University of Vienna; Waehringer Guertel 18-20 Vienna 1090 Austria
2. Clinical Division of Medical Oncology, Department of Internal Medicine; Medical University of Graz; Graz Austria
3. Clinical Division of Haematology & Haemostaseology, Department of Internal Medicine I; Medical University of Vienna; Vienna Austria
4. Institute of Pathology; Medical University of Vienna; Vienna Austria
5. Clinical Division of Oncology, Department of Internal Medicine I; Medical University of Vienna; Vienna Austria