1. Department of Gynecology and Obstetrics, University Hospital Aachen, Pauwelsstr. 30, 52074 Aachen, Germany
2. Department of Gynecology and Obstetrics, University Hospital Zürich, Frauenklinikstr. 10, CH 8910 Zürich, Switzerland
3. German pre-eclampsia self-help group (Arbeitsgemeinschaft Gestose-Frauen e.V.), Geldener Strasse 45, 47661 Issum, Germany