1 Department of Biological Sciences, Kongju National University, Gongju, Korea.
2 Stem Cell and Regenerative Medicine Centre and Neuroscience Centre, Samsung Medical Centre, Seoul, Korea.
3 Stem Cell and Regenerative Medicine Centre and Neuroscience Centre, Samsung Medical Centre, Seoul, Korea Department of Neurology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea Department of Health Sciences and Technology, Samsung Advanced Institute for Health Science and Tech, Sungkyunkwan University, Seoul, Korea kwchung@kongju.ac.kr bochoi77@hanmail.net.
4 Department of Biological Sciences, Kongju National University, Gongju, Korea kwchung@kongju.ac.kr bochoi77@hanmail.net.