1. Department of Obstetrics and Gynecology, Technische Universit�t M�nchen, Munich, Germany
2. Institute of Medical Statistics and Epidemiology, Technische Universit�t M�nchen, Munich, Germany
3. Institute of Pathology, Helmholtz Zentrum Muenchen, Neuherberg, Germany
4. Breast Center, Klinikum der Ludwig Maximilians Universit�t M�nchen, Munich, Germany
5. Department of Pathology and Pathological Anatomy, Technische Universit�t M�nchen, Munich, Germany