1. Department of Cardiology Boston Children's Hospital Boston Massachusetts USA
2. Department of Pediatrics and Child Health The Aga Khan University Hospital Karachi Pakistan
3. Fundacion Cardioinfantil de Bogota Bogota Colombia
4. Amrita Institute for Medical Sciences and Research Centre Kochi Kerala India
5. Institut Jantung Negara Kuala Lumpur Malaysia
6. American British Cowdray Medical Center, I.A.P. and Instituto Nacional de Pediatria Mexico City Mexico
7. Nhi Dong 1 Ho Chi Minh City Vietnam