- Correspondence to Dr Zhenglin Yang, Sichuan Key Laboratory for Disease Gene Study, Hospital of University of Electronic Science and Technology of China & Sichuan Provincial People's Hospital, 32 Road West 2, the First Ring, Chengdu, Sichuan 610072, China;
- Received 26 August 2014
- Revised 14 November 2014
- Accepted 28 November 2014
- Published online 18 February 2015.
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