1. Department of Health Economics, School of Business and Economics & Talma Institute Vrije Universiteit Amsterdam the Netherlands
2. Department of Obstetrics and Gynecology Meander Medical Center Amersfoort the Netherlands
3. Department of Obstetrics and Gynecology Amsterdam University Medical Centers, location VUmc Amsterdam the Netherlands
4. Vektis Zeist the Netherlands
5. Grow School of Oncology and Developmental Biology Maastricht University Medical Center Maastricht the Netherlands
6. Department of Obstetrics and Gynecology Maxima Medical Center Velthoven the Netherlands
7. Zilveren Kruis Health Insurance Leusden the Netherlands