1. Department of Cell Biology, The Scripps Research Institute, North Torrey Pines Road, La Jolla, 92037 CA, USA
2. Clinic of Obstetrics and Gynecology, Karl Franzens University Graz, Auenbruggerplatz 14, 8036 Graz, Austria
3. Institute for Laboratory Medicine, University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
4. Clinic of Obstetrics and Gynecology, University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
5. Institute for Medical Biochemistry, Karl-Franzens-University of Graz, Harrachgasse 21/III, 8010 Graz, Austria