1. Pediatric Cardiovascular Surgery, Clínica Bazterrica, Buenos Aires, Argentina
2. Unidad de Cirugía Cardiovascular, Hospital General de Niños “Dr Pedro de Elizalde”, Buenos Aires, Argentina
3. Heart Institute at UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
4. Division of Pediatric Cardiovascular Surgery, Hospital Universitario Austral, Buenos Aires, Argentina