Open AccessArticle by 1,†, 1,‡, 1,†, 2, 2, 2,§, 1,‖, 1,* and 2,*,‖ 1 Department of Anatomy, Histology, Forensic Medicine and Orthopedic, Section of Histology, Sapienza University of Rome, 00185 Rome, Italy 2 Endocrinology, Department of Clinical and Molecular Medicine, Sant’Andrea University Hospital, Sapienza University of Rome, 00185 Rome, Italy * Authors to whom correspondence should be addressed. † Current address: Clinica Valle Giulia, GeneraLife IVF, 00197 Rome, Italy.