1. The Health Research Institute La Fe (IIS La Fe), IVI Foundation, Valencia, Spain.
2. IVIRMA Madrid, Madrid, Spain.
3. Laboratory of In Vitro Fertilization, IVIRMA Valencia, Valencia, Spain.
4. Department of Medical Specialties and Public Health, Rey Juan Carlos University, Madrid, Spain.
5. School of Medicine, Department of Obstetrics and Gynecology, University of Valencia, Valencia, Spain.
6. IVIRMA Rome, Rome, Italy.