1. Amphia Hospital; Breda the Netherlands
2. VU University Medical Centre; Amsterdam the Netherlands
3. Maxima Medical Centre; Veldhoven the Netherlands
4. Department of Obstetrics and Gynaecology; GROW - School for Oncology and Developmental Biology; Maastricht University Medical Centre; Maastricht the Netherlands
5. St. Antonius Hospital; Nieuwegein Utrecht the Netherlands
6. OLVG Oost Hospital; Amsterdam the Netherlands