1. Fundación Instituto Valenciano de Infertilidad (FIVI), Instituto Universitario IVI/INCLIVA, Valencia, Spain
2. Central Service for Experimental Research, University of Valencia, INCLIVA, Valencia, Spain
3. Department of Pediatrics, Obstetrics and Gynecology, School of Medicine, Valencia University, Valencia, Spain
4. Reproductive Medicine Unit, Instituto de Investigación Sanitaria La Fe (IIS La Fe), Valencia, Spain
5. Department of Obstetrics and Gynaecology, Stanford University School of Medicine, Stanford University, CA, USA