1. Division of Maternal–Fetal Medicine, Hutzel Women's Hospital, Detroit Medical Center, Wayne State University, Detroit, MI, USA,
2. Department of Obstetrics and Gynecology, Hutzel Women's Hospital, Detroit Medical Center, Wayne State University, Detroit, MI, USA, and
3. Division of Maternal–Fetal Medicine, Department of Obstetrics and Gynecology, The University of Texas Health Science Center at Houston, Houston, TX, USA