1. Department of Radiology, Division of Neuroradiology and Musculoskeletal Radiology; Medical University Vienna; Waehringer Guertel 18-20 A-1090 Vienna Austria
2. Medical Genetics Institute; Cedars Sinai Medical Center; 8700 Beverly Boulevard, PACT Suite 400 Los Angeles CA 90048 USA
3. Center of Anatomy and Cell Biology, Integrative Morphology Group; Medical University Vienna; Waehringerstrasse 13 A-1090 Vienna Austria
4. Department of Obstetrics and Gynaecology, Division of Prenatal Diagnosis and Therapy; Medical University Vienna; Waehringer Guertel 18-20 A-1090 Vienna Austria