| Affiliation: | 1. Department of Paediatrics and Adolescent Medicine, University of Erlangen-Nuremberg, Erlangen, Germany;2. Department of Obstetrics & Gynaecology, University of Erlangen-Nuremberg, Erlangen, Germany;3. Department of Obstetrics & Gynaecology, University of Freiburg, Freiburg, Germany;4. Department of Obstetrics & Gynaecology, Städtisches Klinikum München, Munich, Germany;5. Department of Obstetrics & Gynaecology, Ludmillenstift Meppen, Meppen, Germany;6. Department of Obstetrics & Gynaecology, Diakonische Dienste Hannover, Hannover, Germany;7. Department of Paediatrics and Adolescent Medicine, University of Cologne, Cologne, Germany |
