1. Department of Pediatrics/Division of Pediatric Cardiology; Mayo Clinic; Rochester Minnesota
2. Department of Cardiovascular Diseases; Mayo Clinic; Rochester Minnesota
3. Department of Paediatrics; Schulich School of Medicine & Dentistry; London ON Canada
4. Department of Medicine; Schulich School of Medicine & Dentistry; London ON Canada
5. Department of Pathology and Laboratory Medicine; Schulich School of Medicine & Dentistry; University of Western Ontario; London ON Canada