1. Department of Neurology, School of Medicine, Kyungpook National University, Daegu, Korea.
2. Department of Neurology, Daegu Fatima Hospital, Daegu, Korea.
3. Department of Neurology, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
4. Department of Neurology, Yeungnam University College of Medicine, Daegu, Korea.
5. Department of Neurology, Catholic University of Daegu School of Medicine, Daegu, Korea.