1. Women Health Institute, Hospital Clínico San Carlos, IdISSC, School of Medicine, Complutense University, Madrid, Spain
2. EACCOS Research Group, Autonomous University of Madrid, Madrid, Spain
3. Department of Obstetrics and Gynecology, Hospital Quirón, Málaga, Spain
4. Unit of Gynecologic Oncology, Service of Gynecology, Gynecological Oncology Department, Vall d'Hebron, Barcelona, Spain
5. Institute Clinic of Gynecology, Obstetrics, and Neonatology, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
6. Department of Obstetrics and Gynecology, Hospital General Universitario San Jorge, Huesca, Spain
7. Department of Obstetrics and Gynecology, Hospital Universitario de Guadalajara, Guadalajara, Spain
8. Department of Obstetrics and Gynecology, Hospital Universitario de Jaén, Jaén, Spain
9. Hospital Recoletas Campo Grande, Valladolid, Spain
10. Department of Obstetrics and Gynecology, Hospital Universitario Sanitas La Zarzuela, Universidad Francisco de Vitoria, Madrid, Spain
11. Department of Obstetrics and Gynecology, Hospital Universitario Torrecárdenas, Almería, Spain
12. Department of Obstetrics and Gynecology, Centro Médico Vithas El Ejido, Almería, Spain
13. Clínica Dexeus Mujer, Barcelona, Spain.