1. Division of Pediatric Hematology and Oncology Department of Pediatrics Faculty of Medicine Chulalongkorn University and King Chulalongkorn Memorial Hospital Bangkok Thailand
2. King Chulalongkorn Memorial Hospital Thai Red Cross Society Bangkok Thailand
3. Department of Internal Medicine Bassett Medical Center Cooperstown NY USA
4. Department of Internal Medicine Mayo Clinic Rochester MN USA
5. Department of Internal Medicine University of Arizona Tucson AZ USA
6. University of Hawaii Internal Medicine Residency Program Honolulu HI USA
7. Department of Internal Medicine Mayo Clinic Jacksonville FL USA
8. Department of Medicine University of Mississippi Medical Center Jackson MS USA
9. Division of Cardiovascular Medicine Department of Medicine Faculty of Medicine Chulalongkorn University and King Chulalongkorn Memorial Hospital Bangkok Thailand