[1] Breast Clin Niederrhein, W German Study Grp, Monchengladbach, Germany
[2] Tech Univ Munich, Clin Gynaecol & Obstet, Munich, Germany
[3] Univ Duesseldorf, Dusseldorf, Germany
[4] CAESAR, Bonn, Germany
[5] Tech Univ Munich, Klinikum Rechts Isar, Frauenklin, D-8000 Munich, Germany