1. Department of Obstetrics and Gynecology; Zuyderland Medical Centre; Sittard-Geleen and Heerlen The Netherlands
2. Department of Obstetrics and Gynecology; Radboud University Medical Center; Nijmegen The Netherlands
3. KEMTA-Clinical Epidemiology and Medical Technology Assessment; Maastricht University Medical Centre; Limburg The Netherlands
4. Department of Obstetrics and Gynecology; Sint Laurentius Hospital; Roermond The Netherlands
5. Department of Obstetrics and Gynecology; SJG Weert; Weert The Netherlands
6. Department of Obstetrics and Gynecology; Maastricht University Medical Centre; Maastricht The Netherlands
7. GROW-School for Oncology and Developmental Biology; Maastricht University Medical Centre; Maastricht The Netherlands