National Center for Mental Health

Medical Nutrition / geriatric medicine / Gastroeaterology

Seoul National University College of Medicine / Seoul National University Hospital Internal medicine training / USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA Research Scientist / College of medicine, Inje University Dpt of Internal medicine, ass. professor of gastroenterology / Tokyo Metropolitan institute of Gerontology, Tokyo,Japan Scientist Visiting / Director of the Digestive disease Center/ Health Promotion/ International Clinic/ Dpt of Clinical Nutrition, Internal medicine/ Biomedical Research Center