| Affiliation: | 1. Unit of Clinical Immunology, Hospital General Universitario Gregorio Mara?ón, , Madrid, Spain;2. Clinica Tambre, , Madrid, Spain;3. Department of Gynecology and Obstetrics, Hospital General Universitario Gregorio Mara?ón, , Madrid, Spain;4. STAT‐UP Statistical Consulting & Services, , Madrid, Spain;5. Unidad de la Mujer, Hospital Ruber Internacional, , Madrid, Spain;6. Clínica GineFIV, , Madrid, Spain;7. Hospital Universitario de León, , León, Spain;8. Hospital Universitario Marqués de Valdecilla, , Santander, Spain;9. Unit of Immunology, Hospital Clinico San Carlos, , Madrid, Spain;10. Hospital Universitario Puerta del Mar, , Cádiz, Spain |
