1. Department of OB/GYN, Division of Prenatal Medicine, University Hospital UKGM, Justus-Liebig University, Giessen, Germany
2. Department of Pediatric Surgery, University Hospital UKGM, Philipps University of Marburg, Marburg, Germany
3. Center of Obstetrics and Gynecology, University Hospital UKGM, Philipps University of Marburg, Marburg, Germany
4. Department of Diagnostic and Interventional Radiology, University Hospital UKGM, Philipps University of Marburg, Marburg, Germany
5. Division of Prenatal Medicine, Department of Obstretrics and Gynecology, Giessen, Justus-Liebig-University, Germany