| Jan Meiners | Visceral and Thoracic Surgery Department and Clinic, University Medical Centre Hamburg-Eppendorf |
| Martina Kluth | Institute of Pathology, University Medical Centre Hamburg-Eppendorf |
| Claudia Hube-Magg | Institute of Pathology, University Medical Centre Hamburg-Eppendorf |
| Guido Sauter | Institute of Pathology, University Medical Centre Hamburg-Eppendorf |
| Ronald Simon | Institute of Pathology, University Medical Centre Hamburg-Eppendorf |