1. Faculty of Medicine Chiang Mai University Chiang Mai Thailand
2. Faculty of Medicine Chulalongkorn University Bangkok Thailand
3. Srinagarind Hospital Khon Kaen University Khon Kaen Thailand
4. Faculty of Medicine Siriraj Hospital, Mahidol University Bangkok Thailand
5. Section of Pediatrics Hat Yai Hospital Hat Yai Thailand
6. Maharat Nakhon Ratchasima Hospital Nakhon Ratchasima Thailand
7. Faculty of Medicine Ramathibodi Hospital Mahidol University Bangkok Thailand
8. Department of Medical Technology Gifu University of Medical Science Gifu Japan