1. Cardiovascular Unit; Vientiane Laos
2. Korea International Cooperation Agency (KOICA) Laos Office; Vientiane Laos
3. Cardiovascular Center and Department of Internal Medicine; Seoul National University Hospital; Seoul Korea
4. Department of Pediatrics; Children's Hospital; Vientiane Laos
5. Lee Jong-Wook Fellowship Program; JW Lee Center for Global Medicine; Seoul National University and Korea Foundation for International Healthcare (KOFIH); Seoul Korea
6. University of Health Sciences; Vientiane Laos
7. Department of Pediatrics; Seoul National University Children's Hospital; Seoul Korea
8. Department of Cardiology and Cardiovascular Center; Sheikh Khalifa Specialty Hospital; Ras Al Khaimah United Arab Emirates