- Correspondence to Cheng-Hsien Lu, Department of Neurology, Chang Gung Memorial Hospital, 123 Ta Pei Road, Niao Sung Hsiang, Kaohsiung Hsien, Taiwan;
- Received September 16, 2009
- Revised February 23, 2010
- Accepted March 15, 2010
- First published August 3, 2010.
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