[1] Klinikum Frankfurt Hoechst, Frankfurt, Germany
[2] Goethe Univ Frankfurt, German Breast Grp, D-60054 Frankfurt, Germany
[3] Sana Kliniken Offenbach, Offenbach, Germany
[4] Gynakol Onkol Schwerpunktpraxis, Hannover, Germany
[5] Heidelberg Univ, Natl Ctr Tumor Dis, Heidelberg, Germany
[6] Onkol Gemeinschaftspraxis Bethanien Krankenhaus, Frankfurt, Germany
[7] Sana Klinikum Lichtenberg, Berlin, Germany
[8] Univ Munich, Breast Ctr, Munich, Germany
[9] Elisabeth Krankenhaus Kassel, Kassel, Germany
[10] Univ Dusseldorf, Dusseldorf, Germany
[11] Univ Frauenklin, Ulm, Germany
[12] Univ Hosp Hamburg Eppendorf, Hamburg, Germany
[13] Klinikum Landshut, Dept Obstet & Gynecol, Landshut, Germany
[14] Klinikum Landshut, Interdisciplinary Breast Canc Ctr, Landshut, Germany
[15] Johannes Gutenberg Univ Mainz, Dept Obstet & Gynecol, D-55122 Mainz, Germany
[16] Sana Klinikum Offenbach, German Breast Grp, Neu Isenburg, Germany
[17] German Breast Grp, Neu Isenburg, Germany
[18] Helios Klinikum Berlin Buch, Berlin, Germany
[19] Univ Halle Wittenberg, Dept Gynecol, D-06108 Halle, Germany