1. Renal Division, Department of Medicine, Faculty of Medicine; Srinakharinwirot University; Thailand
2. Renal Division, Department of Medicine, Faculty of Medicine; Prince of Songkla University; Thailand
3. Ramathibodi Comprehensive Cancer Center, Faculty of Medicine; Ramathibodi Hospital; Thailand
4. Department of Preventive and Social Medicine, Faculty of Medicine; Srinakharinwirot University; Thailand
5. Faculty of Public Health; Khon Kaen University; Thailand