Division of Pediatric Cardiology, Department of Pediatrics, University of Michigan, Ann Arbor, Michigan; Biometric Ultrasonic Laboratory, Division of Computer Sciences, University of Michigan, Ann Arbor, Michigan; Division of Pediatric Cardiovascular Surgery, Section of Cardiac Surgery, University of Michigan, Ann Arbor, Michigan; Department of Pathology, University of Michigan, Ann Arbor, Michigan (Blackwell Futura Publishing, Inc., 2000-08)