1. Research InstituteHospital de la Santa Creu i Sant Pau Barcelona Spain
2. Department of Endocrinology & NutritionHospital de la Santa Creu i Sant Pau Barcelona Spain
3. Department of MedicineUniversitat Autònoma de Barcelona Barcelona Spain
4. CIBER Bioengineering, Biomaterials and Nanotechnology (CIBER‐BBN)Instituto de Salud Carlos III Madrid Spain
5. Department of Gynecology and ObstetricsHospital de la Santa Creu i Sant Pau Barcelona Spain
6. Department of Pediatrics, Obstetrics and Gynecology and Preventive MedicineUniversitat Autònoma de Barcelona Barcelona Spain
7. Department of Clinic Epidemiology and Public HealthHospital de la Santa Creu i Sant Pau Barcelona Spain
8. CIBER Epidemiología y Salud Pública (CIBERESP)Instituto de Salud Carlos III Madrid Spain
9. Department of Obstetrics and GynecologyMedizinische Universitaet Graz Graz Austria
10. Department of Reproductive BiologyCase Western Reserve University Cleveland Ohio