1. Department of Physiology and Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
2. Department of Surgery, Chungnam National University School of Medicine, Daejeon 35015, Korea
3. Department of Plastic Reconstructive Surgery, Chungnam National University School of Medicine, Daejeon 35015, Korea
4. Department of Brain Research Institute, Chungnam National University School of Medicine, Daejeon 35015, Korea
5. Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon 35015, Korea