1. Department of Biomedical Gerontology, Graduate School of Hallym University, Chuncheon, South Korea
2. Department of Neurology, Hallym University Sacred Heart Hospital, Hallym University, Anyang, South Korea
3. Hallym Neurological Institute, Hallym University, South Korea
4. Department of Neurology, Yongin Severance Hospital, Yonsei University College of Medicine, South Korea
5. Ilsong Institute of Life Science, Hallym University, Seoul, South Korea
6. Department of Medical Sciences, Graduate School of Hallym University, Chuncheon, South Korea