1. Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, University of Michigan, Ann Arbor, MI, USA
2. Department of Obstetrics and Gynecology, Tufts Medical Center, Boston, MA, USA
3. Department of Obstetrics and Gynecology, Icahn School of Medicine at Mt. Sinai, New York, NY, USA
4. Department of Pediatrics, Division of Neonatology, Connecticut Children’s Hospital, Farmington, CT, USA
5. Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, University of Connecticut, Farmington, CT, USA