- Correspondence to Dr Xiaozhong Guo and Dr Xingshun Qi, Department of Gastroenterology, General Hospital of Shenyang Military Area, No. 83 Wenhua Road, Shenyang 110840, China; and
- Received January 19, 2016
- Revised June 6, 2016
- Accepted August 27, 2016
- First published September 23, 2016.
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