title: Can We Confidently Define "Normal" for Our Neonatal Patients?
authors.affiliation: Division of Neonatology, CHOC Children's Specialists, Orange County, California. Electronic address: aashrafi@choc.org.
authors.forename: Amir H
authors.initials: AH
authors.lastname: Ashrafi
authors.affiliation: Division of Pediatric Cardiology, CHOC Children's Specialists, Orange County, California.
authors.forename: Wyman W
authors.initials: WW
authors.lastname: Lai
mesh_terms: D001013:Aorta, Thoracic; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature