1. Department of Life and Nanopharmaceutical Science; Kyung Hee University; Seoul 130-701 Korea
2. Department of Pharmacology, School of Medicine and Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology; Konkuk University; Seoul 143-701 Korea
3. Department of Pharmacy; Sahmyook University; Seoul 139-742 Korea
4. Oriental Pharmaceutical Science, College of Pharmacy; Kyung Hee University; Seoul 130-701 Korea
5. Faculty of Marine Biomedical Science; Cheju National University; Jeju 690-756 Korea