1. Division of Cardiology, Department of MedicineFaculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thai Red Cross Society Bangkok Thailand
2. Department of Internal MedicineMayo Clinic Rochester Minnesota USA
3. Department of Internal MedicineUniversity of Arizona Tucson Arizona USA
4. Department of Internal MedicineBassett Medical Center Cooperstown New York USA
5. Department of Internal MedicineTexas Tech University Health Sciences Center Lubbock Texas USA
6. Department of Internal MedicineMayo Clinic Jacksonville Florida USA
7. Division of Nephrology, Department of MedicineUniversity of Mississippi Medical Center Jackson Mississippi USA