1. Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, The Netherlands
2. Netherlands Organization for Applied Scientific Research TNO, Sustainable Productivity and Employability, Leiden, The Netherlands
3. Department of Obstetrics and Gynecology, St. Lucas Andreas Hospital, Amsterdam, The Netherlands
4. Department of Obstetrics and Gynecology, VU University Medical Center, Amsterdam, The Netherlands