1. Gynecology Department, Hospital Universitario Santa Cristina, 28009 Madrid, Spain
2. Gynecologic Oncology Unit, La Paz University Hospital, 28046 Madrid, Spain
3. Gynecology Department, Hospital Universitario Materno Infantil, 06010 Las Palmas de Gran Canaria, Spain
4. Gynecology Department, IMED Hospitales, 46100 Valencia, Spain
5. Gynecology Department, Hospital Universitario Bellvitge, 08907 Barcelona, Spain
6. Gynecology Department, Hospital Universitario de Donostia, 20014 San Sebastian, Spain
7. Gynecology Department, Hospital Virgen de la Arrixaca, 30120 Murcia, Spain
8. Gynecology Department, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain
9. Institute Clinic of Gynecology, Obstetrics and Neotatology, Hospital Clinic de Barcelona, 08007 Barcelona, Spain
10. Gynecology Department, Hospital de Castellón, 12004 Castellón, Spain
11. Gynecology Department, Hospital de Mataró, 08304 Barcelona, Spain
12. Gynecology Department, Hospital Quirón Madrid, 28223 Madrid, Spain
13. Gynecology Department, Hospital General Universitario de Ciudad Real, 13005 Ciudad Real, Spain
14. Gynecology Department, Hospital Universitario Infanta Leonor, 28031 Madrid, Spain
15. Gynecology Department, Complejo Asistencial de Zamora, 49022 Zamora, Spain
16. Gynecology Department, Hospital Universitario Fundación Alcorcón, 28922 Madrid, Spain