Funding for this research was provided by:
National Natural Science Foundation of China (No. 81601898)
China Postdoctoral Science Foundation (No. 2017M613177)
This study was supported by the Natural Science Research Foundation of Shaanxi Province, China (No. 2017JM8115, No. 2017JQ8056)
Received: 7 July 2018
Accepted: 7 June 2019
First Online: 29 June 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Honghui Hospital (No. XAHHLLSP1022), and written consent was obtained from all patients.
: Not applicable.
: The authors declare that they have no competing interests.