Affiliation: | 1. Section of Pediatric Cardiology C. S. Mott Children''s Hospital, Ann. Arbor, Mich. USA;2. Section of Thoracic Surgery, C. S. Mott Children''s Hospital, Ann. Arbor, Mich. USA;3. Department of Pediatrics, University of Michigan Medical Center, Ann Arbor, Mich. USA;4. Department of Surgery, University of Michigan Medical Center, Ann Arbor, Mich. USA |