- Correspondence to Professor Hanlin L Wang, Department of Pathology and Laboratory Medicine, University of California in Los Angeles, 10833 Le Conte Ave, 13-145 CHS, Los Angeles, CA 90095, USA;
- Received 13 August 2013
- Revised 22 November 2013
- Accepted 16 December 2013
- Published online 17 May 2014.
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