1. Department of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg D-20246, Germany
2. General, Visceral and Thoracic Surgery Department and Clinic, University Medical Center Hamburg-Eppendorf, Hamburg D-20246, Germany
3. Department of Pathology, Clinical Center Osnabrück, Osnabrück D-49076, Germany
4. Breast cancer center, Niels-Stensen Clinic, Franziskus-Hospital Harderberg, Georgsmarienhütte D-49124, Germany
5. Department of Gynecology and Clinic, University Medical Center Hamburg-Eppendorf, Hamburg D-20246, Germany
6. Department of Gynecology, Regio Clinic Pinneberg, Pinneberg D-25421, Germany
7. Department of Gynecology, Regio Clinic Elmshorn, Elmshorn D-25337, Germany
8. Department of Gynecology, Regio Clinic and Senior Citizen Center Itzehoe, Itzehoe D-25524, Germany
9. Cantonal Hospital Basel, University of Basel, Basel CH-4031, Switzerland