1. Department of Obstetrics and Gynaecology, Würzburg University Medical Centre, Würzburg, Germany
2. Department of Pathology, Universitiy of Würzburg and Comprehensive Cancer Center (CCC) Mainfranken, Würzburg, Germany
3. Institute of Pathology, Ludwig-Maximilians-University Munich, Munich, Germany
4. Department of Diagnostic Radiology, Würzburg University Medical Centre, Würzburg, Germany