1. Department of Obstetrics and Gynecology; Sinai Hospital of Baltimore; Baltimore MD USA
2. Department of Neuroscience, Reproductive Sciences and Dentistry; School of Medicine; University of Naples Federico II; Naples Italy
3. Department of Obstetrics and Gynecology; University of Rochester; Rochester NY USA
4. Department of Obstetrics and Gynecology; Catholic University of Sacred Heart; Rome Italy
5. Division of Maternal-Fetal Medicine; Department of Obstetrics and Gynecology; Sidney Kimmel Medical College; Thomas Jefferson University; Philadelphia PA USA