1. Institute of Pathology, Technische Universität München, Munich, Germany
2. Current address: Department of Pathology, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center and Case Comprehensive Cancer Center, Cleveland, Ohio, United States
3. Institute of Medical Statistics and Epidemiology, Technische Universität München, Munich, Germany
4. Department of Obstetrics and Gynecology, Technische Universität München, Munich, Germany
5. Current address: Department of Gynecology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany