Funding for this research was provided by:
National Natural Science Foundation of China (31870817, 81820108016)
Received: 20 January 2020
Accepted: 22 April 2020
First Online: 12 May 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the First Affiliated Hospital of Zhengzhou University, and written informed consent was obtained from all patients prior to the initiation of clinical cycles.
: Not applicable.
: The authors declare that they have no competing interests.