[1] Goethe Univ Frankfurt, German Breast Grp, D-60054 Frankfurt, Germany
[2] Univ Cologne, D-50931 Cologne, Germany
[3] Univ Erlangen Nurnberg, Dept Obstet & Gynecol, Univ Hosp Erlangen, Comprehens Canc Ctr Erlangen EMN, D-91054 Erlangen, Germany
[4] Univ Heidelberg Hosp, Heidelberg, Germany
[5] Hematol Oncol Clin, Munich, Germany
[6] Louisen Hosp, Breast Ctr Duesseldorf, Dusseldorf, Germany
[7] Brustzentrum Sankt Gertrauden Krankenhaus, Berlin, Germany
[8] Frauenklin Gera, Gera, Germany
[9] Sana Kliniken Offenbach, Offenbach, Germany
[10] Univ Rostock, D-18055 Rostock, Germany
[11] Praxisklin Krebsheilkunde, Berlin, Germany
[12] Evangel Huyssens Stiftung, Kliniken Essen Mitte, Breast Canc Ctr, Essen, Germany
[13] Univ Kiel, Kiel, Germany
[14] Tech Univ Munich, Klinikum Rechts Isar, Dept Obstet & Gynecol, D-80290 Munich, Germany
[15] German Breast Grp, Neu Isenburg, Germany
[16] Sana Klinikurn Offenbach, German Breast Grp, Neu Isenburg, Germany
[17] Helios Klinikum Berlin Buch, Dept Gynecol & Obstet, Berlin, Germany
[18] Helios Klinikum Berlin Buch, Multidisciplinary Breast Canc Ctr, Berlin, Germany
[19] Ctr Familial Breast & Ovarian Canc, Cologne, Germany
[20] Ctr Integrated Oncol, Cologne, Germany