- Correspondence to Dr Xianyong Gui, Department of Pathology, Foothills Medical Centre, Main Building, 11th Floor, 1403 29 St NW, Calgary, Alberta, Canada T2N 2T9;
- Received January 24, 2016
- Revised May 23, 2016
- Accepted June 9, 2016
- First published July 1, 2016.
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