- Correspondence to Prof Nobuhiro Yuki, Departments of Microbiology and Medicine, National University of Singapore, 5 Science Drive 2, Blk MD4A, Level 5, Singapore 117597;
- Received June 30, 2010
- Revised October 6, 2010
- Accepted November 13, 2010
- First published January 20, 2011.
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