- Correspondence to Dr Masaki Naganuma, Cerebrovascular Division, Department of Medicine, National Cardiovascular Center, Fujishirodai 5-7-1, Suita, Osaka 565-8565, Japan;
- Received November 8, 2008
- Revised February 25, 2009
- Accepted March 2, 2009
- First published February 25, 2010.
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