RWTH Aachen University, Vandage GmbH, University of Münster, Municipal Hospital Braunschweig, Hannover Medical School, University Clinic Frankfurt, Vandage GmbH, Vandage GmbH, BARMER, GlaxoSmithKline - Munich, GlaxoSmithKline - Munich, GlaxoSmithKline - Munich, Charité - Universitätsmedizin Berlin, University of Heidelberg, University of Kiel, RWTH Aachen University, University of Wuerzburg - University Hospital of Wuerzburg, University of Hamburg - University Medical Center Hamburg-Eppendorf, Immanuel Krankenhaus Berlin and Charité - Universitätsmedizin Berlin

affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Hannover Medical School, Hannover Medical School, Hannover Medical School - Department of Obstetrics, Gynecology and Reproductive Medicine, Hannover Medical School and affiliation not provided to SSRN