- Correspondence to Professor Yang-Ha Hwang, Department of Neurology, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Republic of Korea, 130, Dongduk-ro, Jung-gu, Daegu 41944, Republic of Korea;
- Received April 14, 2016
- Revised June 2, 2016
- Accepted June 13, 2016
- First published July 5, 2016.
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