1. Division of Pediatric Cardiology, Department of Pediatrics; Chiang Mai University; Chiang Mai Thailand
2. Northern Cardiac Center, Chiang Mai University; Chiang Mai Thailand
3. Division of Cardiovascular Thoracic Surgery, Department of Surgery; Chiang Mai University; Chiang Mai Thailand
4. Division of Cardiology, Department of Internal Medicine; Chulalongkorn University; Bangkok Thailand
5. Division of Pediatric Cardiology, Department of Pediatrics; Chulalongkorn University; Bangkok Thailand