Affiliation: | 1. Section of Gynaecological Endocrinology and Reproductive Medicine, University of Ulm, Ulm, Germany;2. Institute of Biology and Immunology of Reproduction, Sofia, Bulgaria;3. National Pharmaceutical University of Kharkov, Kharkov, Ukraine;4. Center of Obstetrics and Gynecology, J.W. Goethe-University, Frankfurt am Main, Ulm, Germany;5. Praxisklinik Frauenstrasse, Ulm, Germany |