1 Department of Gynecology and Reproductive Medicine, Jena University Hospital, Friedrich Schiller-University Jena, Am Klinikum 1, 07747, Jena, Germany. ingo.runnebaum@med.uni-jena.de.
2 Department of Gynecology and Reproductive Medicine, Jena University Hospital, Friedrich Schiller-University Jena, Am Klinikum 1, 07747, Jena, Germany.