- Correspondence to Professor Jens T Siveke, Division of Translational Solid Tumor Oncology, West German Cancer Center, University Hospital Essen, Hufelandstr. 55, 45147 Essen, Germany;
- Received September 20, 2015
- Revised September 21, 2015
- Accepted September 22, 2015
- First published October 13, 2015.
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