- Correspondence to Dr Joon-Tae Kim, Department of Neurology, Chonnam National University Medical School, 8 Hak-dong, Dong-ku, Gwangju 501-757, Korea;
- Received February 13, 2015
- Revised April 1, 2015
- Accepted April 6, 2015
- First published April 24, 2015.
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