- Correspondence to Professor Elisabete Weiderpass, Department of Research, Group of Etiological Cancer Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Postboks 5313 Majorstuen, Oslo 0304, Norway;
- Received October 1, 2016
- Revised November 22, 2016
- Accepted December 20, 2016
- First published January 9, 2017.
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