1. BCNatal, Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan De Deu), Institut D’investigacions Biomèdiques August Pi I Sunyer, Universitat De Barcelona, and Centre for Biomedical Research on Rare Diseases (CIBER-ER), Barcelona, Spain and
2. Infertility and Assited Reproduction Unit, Faculty of Medicine, University of Barcelona, Hospital Clínic Institut D'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain