- Correspondence to Professor Yang-Ha Hwang, Assistant Professor, Department of Neurology and Cerebrovascular Center, School of Medicine, Kyungpook National University Hospital, 130, Dongduk-ro, Jung-gu, Daegu 700-721, Republic of Korea;
- Received January 16, 2012
- Revised March 5, 2012
- Accepted April 11, 2012
- First published April 27, 2012.
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