1. Faculty of Medicine, Division of Cardiology, Department of Medicine; Chulalongkorn University and King Chulalongkorn Memorial Hospital; Thai Red Cross Society Bangkok Thailand
2. Department of Internal Medicine; University of Arizona; Tucson Arizona USA
3. Department of Internal Medicine; Mayo Clinic; Rochester Minnesota USA
4. Department of Internal Medicine; Temple University; Philadelphia Pennsylvania USA
5. Department of Internal Medicine; Texas Tech University Health Sciences Center; Lubbock Texas USA
6. Clinical Epidemiology Unit, Faculty of Medicine Siriraj Hospital, Department of Research and Development; Mahidol University; Bangkok Thailand
7. Division of Nephrology, Department of Medicine; University of Mississippi Medical Center; Mississippi USA