1. Catharina Cancer Institute, Catharina Hospital; Department of Obstetrics and Gynaecology; Michelangelolaan 2 Eindhoven Netherlands 5623EJ
2. Radboud University Nijmegen Medical Centre; Department of Obstetrics and Gynaecology; Nijmegen Nijmegen Netherlands 6525 GA
3. Elisabeth-TweeSteden Hospital; Obstetrics and Gynaecology; Hilvarenbeekseweg 60 Tilburg Netherlands 5000LC
4. Catharina Hospital; Department of Education and Research; Michelangelolaan 2 Eindhoven Netherlands 5623 EJ
5. Manchester Academic Health Science Centre (MAHSC), University of Manchester; Centre for Biostatistics, School of Health Sciences, Faculty of Biology, Medicine and Health; Clinical Sciences Building Salford Royal NHS Foundation Trust Hospital Room 1.315, Jean McFarlane Building University Place Oxford Road Manchester UK M13 9PL