1. Placental Development Group, Reproductive Biology Unit, Department of Obstetrics and Gynaecology, Medical University of Vienna, Vienna, 1090 Austria
2. Fetal-Maternal Immunology Group, Reproductive Biology Unit, Department of Obstetrics and Gynaecology, Medical University of Vienna, Vienna, 1090 Austria
3. Gynmed Clinic, 1150 Vienna, Austria
4. Center for Anatomy and Cell Biology, Medical University of Vienna, 1090 Vienna, Austria