1. Department of Gynecological Oncology, Erasmus MC Cancer Institute, University Medical Centre Rotterdam, Rotterdam, the Netherlands
2. Department of Obstetrics and Gynecology, Albert Schweitzer Hospital, Dordrecht, the Netherlands
3. Department of Public Health, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, the Netherlands
4. Department of Obstetrics and Gynecology, Ikazia Hospital, Rotterdam, the Netherlands