1. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA, USA
2. Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA, USA
3. Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Rome, Italy
4. Department of Obstetrics and Gynecology, The University of British Columbia, Vancouver, BC, Canada
5. Division of Neonatology, Children’s Hospital of Philadelphia and the Hospital of the University of Pennsylvania, Philadelphia, PA, USA