- Correspondence to Professor Rui-Hua Xu, Department of Medical Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China;
- Received March 27, 2018
- Revised August 28, 2018
- Accepted September 1, 2018
- First published September 29, 2018.
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