1. Institute of Cell Biology, Histology and Embryology, Medical University of Graz, Graz, Austria;
2. Institute of Chemistry and Biochemistry-Organic Chemistry, Freie Universität Berlin, Berlin, Germany;
3. Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria;
4. Department of Obstetrics and Gynecology, Medical University of Graz, Graz, Austria;
5. Institute of Biophysics, Medical University of Graz, Graz, Austria