1. Department of Neurology, Inje University College of Medicine, Busan, Korea.
2. Dementia and Neurodegenerative Disease Research Center, Inje University, Busan, Korea.
3. Department of Neurosurgery, Inje University College of Medicine, Busan, Korea.
4. Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.