1. Department of Pathology; University Medical Center Hamburg-Eppendorf; Martinistr. 52 20246 Hamburg Germany
2. Department of General, Visceral and Thoracic Surgery; University Medical Center Hamburg-Eppendorf; Martinistr. 52 20246 Hamburg Germany
3. Dept. of Clinical Chemistry; University Medical Center Hamburg-Eppendorf; Martinistr. 52 20246 Hamburg Germany