Affiliation: | 1. Department of Gynecological Endocrinology and Reproductive Medicine, University Clinic of Schleswig-Holstein, Ratzeburger Allee 160, 23538, Lübeck, Germany 2. Gene Technology/Microbiology, Faculty of Biology, University of Bielefeld, Universit?tsstra?e 25, 33615, Bielefeld, Germany
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