- Correspondence to Hongyao Yu, Division of Molecular Genetic Epidemiology, German Cancer Research Centre (DKFZ), Im Neuenheimer Feld 580, Heidelberg D-69120, Germany;
- Received March 30, 2016
- Revised August 29, 2016
- Accepted August 30, 2016
- First published September 20, 2016.
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