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History
- Received July 21, 2013
- Accepted September 14, 2013
- Published online September 1, 2013.
Copyright & Usage
Copyright: © 2013, Cancer Biology & Medicine https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY) 4.0, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.