University of Heidelberg - Department of Obstetrics and Gynaecology, Medical Faculty Mannheim, German Cancer Research Center (DKFZ) - Digital Biomarkers for Oncology Group, University Hospital of Rostock - Department of Obstetrics and Gynecology, German Cancer Research Center (DKFZ) - Digital Biomarkers for Oncology Group, SRH Waldklinikum Gera GmbH, Universitätsfrauenklinik Aachen, GOSPL - Gesellschaft für onkologische Studien, University Medicine Rostock - Department of Radiotherapy, Hebrew University of Jerusalem, University of Heidelberg - Department of Obstetrics and Gynaecology, Medical Faculty Mannheim, University of Marburg - Institute for Pathology, University Hospital of Rostock - Department of Obstetrics and Gynecology, Universitätsklinikum Schleswig-Holstein - Klinik für Strahlentherapie, Klinik St. Elisabeth - Brustzentrum Heidelberg, Klinik St. Elisabeth - Brustzentrum Heidelberg, Klinikum Esslingen, German Breast Group (GBG Forschungs GmbH), University of Heidelberg - Institute of Pathology, Medical Faculty Mannheim, University of Heidelberg - Institute of Pathology, Medical Faculty Mannheim, University of Heidelberg - Institute of Pathology, Medical Faculty Mannheim, German Breast Group (GBG Forschungs GmbH), University Hospital of Rostock - Department of Obstetrics and Gynecology and German Cancer Research Center (DKFZ) - Digital Biomarkers for Oncology Group