1. Perinatal and Pediatric Pathology, Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA
2. Division of Maternal and Fetal Medicine, University of Utah Hospital, Obstetrics and Gynecology, Salt Lake City, Utah, USA
3. Pathology and Laboratory Medicine, Division of Pediatric Pathology, Washington University in Saint Louis School of Medicine, Saint Louis, Missouri, USA
4. Pathology and Laboratory Medicine, Division of Perinatal and Pediatric Pathology, Women and Infants Hospital, Brown University Warren Alpert Medical School, Providence, Rhode Island, USA
5. Division of Maternal Fetal Medicine, University of Utah Hospital, Obstetrics and Gynecology, Salt Lake City, Utah, USA