1. Division of Endocrinology; Department of Pediatrics; Faculty of Medicine; Chulalongkorn University; Chonburi Thailand
2. Department of Pediatrics; Chonburi Hospital; Chonburi Thailand
3. Department of Pediatrics; Police General Hospital; Bangkok Thailand
4. Division of Hematology and Oncology; Department of Pediatrics; Faculty of Medicine; Chulalongkorn University; Chonburi Thailand