Karel Kostev1,2, Matthias Kalder3. 1. Department of Gynecology and Obstetrics, Philipps-University Marburg, Marburg, Germany. kkostev@de.imshealth.com. 2. Epidemiology, IQVIA, Frankfurt, Germany. kkostev@de.imshealth.com. 3. Department of Gynecology and Obstetrics, Philipps-University Marburg, Marburg, Germany.