1. Department of Obstetrics and Gynecology, Medical Faculty, RWTH Aachen, Aachen, Germany
2. Proteome Center Rostock, Department for Proteome Research, Institute of Immunology, Medical Faculty and, Natural Science Faculty, University of Rostock, Schillingallee 69, 18055, Rostock, Germany
3. Department of Obstetrics and Gynecology, Medical Faculty, University of Rostock, Clinic Suedstadt, Rostock, Germany