1. Mother Infant Research Institute; Tufts Medical Center; Boston MA USA
2. Discipline of Obstetrics, Gynaecology and Neonatology; University of Sydney; Sydney New South Wales Australia
3. Department of Computer Science; Tufts University; Medford MA USA
4. Department of Obstetrics, Gynecology and Reproductive Medicine, Division of Maternal-Fetal Medicine; University of Texas School of Medicine at Houston; Houston TX USA
5. Texas Fetal Center; Children's Memorial Hermann Hospital; Houston TX USA
6. Warren Alpert Medical School and the Fetal Treatment Program of New England; Brown University; Providence RI USA
7. Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine; Baylor College of Medicine; Houston TX USA
8. Texas Children's Fetal Center; Texas Children's Hospital; Houston TX USA