Affiliation: | 1. Department of Obstetrics and Gynecology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands;2. Department of Obstetrics and Gynecology, University Hospital Tübingen, University of Tübingen, Tübingen, Germany;3. Department of Obstetrics and Gynecology, Amsterdam UMC and University Medical Center Groningen, University of Groningen, Groningen, The Netherlands |