1. Department of Medicine, Division of Clinical Nutrition Khon Kaen Hospital Khon Kaen Thailand
2. Department of Surgery, Division of General Surgery, Faculty of Medicine Ramathibodi Hospital Mahidol University Bangkok Thailand
3. Department of Medicine, Division of Nutrition and Biochemical Medicine, Faculty of Medicine Ramathibodi Hospital Mahidol University Bangkok Thailand
4. Department of Medicine, Division of Endocrinology and Metabolism, Faculty of Medicine Ramathibodi Hospital Mahidol University Bangkok Thailand
5. Graduate Program in Nutrition, Faculty of Medicine Ramathibodi Hospital Mahidol University Bangkok Thailand