Funding for this research was provided by:
Young Scientists Fund (81602667)
Guangdong Medical Research Foundation (A2015534, B2016048)
Article History
Received: 10 January 2019
Accepted: 6 June 2019
First Online: 20 June 2019
Ethics approval and consent to participate
: The protocol was approved by the Ethics Committees of the Cancer Hospital of Shantou University Medical College. Because this is not a treatment-based study, our institutional review board waived the need for written informed consent from the participants. However, the patient information was kept anonymous to protect their confidentiality.
: Not applicable.
: All authors certify that his manuscript has not been published in whole or in part nor is it being considered for publication elsewhere. The authors declare that they have no competing interests.