Institution: | 1. Division of Intractable Diseases, Center for Biomedical Sciences, National Institute of Health, Chungcheongbuk-do 363-951, Korea;2. Clinical Research Center, National Masan Hospital, Changwon 631-710, Korea;3. Division of Brain Diseases, Center for Biomedical Sciences, National Institute of Health, Chungcheongbuk-do 363-951, Korea |