1 Pediatric Cardiology Section, Department of Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children's Hospital, 1 Children's Way, Little Rock, AR 72202. Electronic address: tenissen@uams.edu.
2 Pediatric Cardiology Section, Department of Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children's Hospital; Pediatric Radiology Section, Department of Radiology, University of Arkansas for Medical Sciences and Arkansas Children's Hospital.
3 Department of Pediatric Cardiovascular Surgery, University of Arkansas for Medical Sciences and Arkansas Children's Hospital.