1 Northwestern University Feinberg School of Medicine, 420 E Superior St., Chicago, IL 60611; Department of Medical Humanities and Bioethics, Northwestern University Feinberg School of Medicine, Chicago, IL. Electronic address: yuqi.bian@northwestern.edu.
2 The Chicago Institute for Fetal Health, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL; Department of Surgery, Division of Pediatric Surgery, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
3 The Chicago Institute for Fetal Health, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL.
4 Division of Neonatology, Division of Palliative Care, Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL.
5 Section of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Pritzker School of Medicine at the University of Chicago, Chicago, IL.