1. Section for Clinical Epidemiology and Biostatistics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
2. Department of Preventive and Social Medicine, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand
3. Department of Internal Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
4. Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
5. Department of Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
6. Department of Internal Medicine, Rajavithi Hospital, Bangkok, Thailand
7. Department of Internal Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
8. Department of Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand
9. Division of Nephrology, Department of Medicine, Chulalongkorn University, Bangkok, Thailand