1. Department of Rehabilitation Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
2. Department of Neurology, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
3. 3billion, Inc., Seoul, Korea
4. Department of Pediatrics, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea