1. Department of Obstetrics and Gynecology, University Hospital, Friedrich Schiller University of Jena, Germany
2. Department of Neurology, University Hospital, Friedrich Schiller University of Jena, Germany
3. Biomagnetic Center, Department of Neurology, Friedrich Schiller University Jena, Germany
4. Institute of Biomedical Engineering and Informatics, Technical University of Ilmenau, Germany