1. Department of Internal Medicine University of Hawaii Honolulu USA
2. Department of Medicine King Chulalongkorn Memorial Hospital Bangkok Thailand
3. Department of Internal Medicine Bassett Medical Center and Columbia University College of Physicians and Surgeons Cooperstown USA
4. Division of Rheumatology Department of Internal Medicine Mayo Clinic Rochester USA
5. Division of Rheumatology Department of Medicine Faculty of Medicine Siriraj Hospital Mahidol University Bangkok Thailand