1. Division of Cardiology; Department of Medicine, Faculty of Medicine; Siriraj Hospital, Mahidol University; Bangkok Thailand
2. Division of Haematology, Department of Paediatrics, Faculty of Medicine; Siriraj Hospital, Mahidol University; Bangkok Thailand
3. Department of Radiology; Faculty of Medicine; Siriraj Hospital, Mahidol University; Bangkok Thailand
4. Division of Cardiology; Children's Hospital Los Angeles; Los Angeles CA USA