- Correspondence to Dr J M Hong, Department of Neurology, Ajou University Medical Centre, Ajou University School of Medicine, 5 San, Woncheon-dong, Yongtong-gu, Suwon-si, Kyunggi-do, 442-749, South Korea;
- Received December 5, 2008
- Revised February 23, 2009
- Accepted April 2, 2009
- First published May 3, 2009.
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