1. Department of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstrasse 8, 07743 Jena, Germany
2. Department of Gynecology and Reproduction Medicine, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany
3. Mass Spectrometry Platform, Friedrich Schiller University Jena, Humboldtstrasse 8, 07743 Jena, Germany