1. Department of Military and Community Medicine; Phramongkutklao College of Medicine; Bangkok Thailand
2. Department of Internal Medicine; Bassett Medical Center; New York City New York USA
3. Department of Pharmacology; Phramongkutklao College of Medicine; Bangkok Thailand
4. Medicine, Geriatric Unit; Phramongkutklao College of Medicine; Bangkok Thailand
5. Department of Parasitology; Phramongkutklao College of Medicine; Bangkok Thailand
6. Department of Nephrology and Hypertension; Mayo Clinic; Rochester Minnesota USA
7. Division of Nephrology/Medicine; University of Mississippi Medical Center; Jackson Mississippi USA