1. Centre for Reproductive Medicine, Universitair Ziekenhuis Brussel, Brussels, Belgium
2. Department of Obstetrics and Gynaecology, University of Zagreb School of Medicine, Zagreb, Croatia
3. CARE Fertility Group, Nottingham, UK
4. 9.baby, Family and Fertility Center, Bologna, Italy
5. Queensland Fertility Group, Toowoomba Specialist Centre, Toowoomba, Queensland, Australia
6. Instituto Valenciano de Infertilidad (IVI-RMA), Madrid, Spain
7. Department of Obstetrics and Gynecology, Rey Juan Carlos University, Madrid, Spain
8. Université Paris Descartes, Assistance Publique – Hôpitaux de Paris (AP-HP), Hôpital Universitaire Paris Centre (HUPC), Paris, France
9. Faculté de Médecine, Sorbonne Paris Cité, Paris, France
10. Department of Gynecology Obstetrics II and Reproductive Medicine (Professor Chapron), Centre Hospitalier Universitaire (CHU) Cochin, Paris, France
11. Department of Development, Reproduction and Cancer, Institut Cochin, INSERM U1016 (Professor Batteux), Université Paris Descartes, Sorbonne Paris Cité, Paris, France
12. Fertility Clinic, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark