- Correspondence to Dr Atsushi Ochiai, Pathology Division, Research Center for Innovative Oncology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba 277-8577, Japan;
- Received December 3, 2014
- Revised March 19, 2015
- Accepted April 13, 2015
- First published April 30, 2015.
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