Funding for this research was provided by:
Natural Science Foundation of Shandong Province (ZR2013HL070)
Key Technology Research and Development Program of Shandong (2016YFC0902602, 2016WS0712)
National Natural Science Foundation of China (81972376)
Received: 16 July 2019
Accepted: 26 June 2020
First Online: 16 July 2020
Ethics approval and consent to participate
: This study has been approved by the Institutional Ethical Committee of Yantai Yuhuangding Hospital, First Affiliated Hospital of Sun Yat-sen University and Cancer Center of Sun Yat-sen University. Written informed consent was obtained from each patient prior to data collection and experiments.
: Not applicable.
: The authors declare that they have no competing interests.