- Correspondence to Dr Jun Guo, Department of Renal Cancer and Melanoma, Peking University Cancer Hospital & Institute, No. 52 Fucheng Road, Haidian District, Beijing 100142, PR China; email@example.com
- Received July 29, 2014
- Revised December 2, 2014
- Accepted December 27, 2014
- First published January 16, 2015.
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