Affiliation: | a Rainbow Babies and Children's Hospital, Department of Neonatology, Case Western Reserve University School of Medicine, Cleveland, OH b Rainbow Babies and Children's Hospital, Department of Clinical Epidemiology, Case Western Reserve University School of Medicine, Cleveland, OH c Rainbow Babies and Children's Hospital, Department of Radiology, Case Western Reserve University School of Medicine, Cleveland, OH d Geisinger Health System, Center for Health Research, Danville, PA |