Xu, Jian
Deng, Yao
Yu, Chun-Yan
Gao, Zhao-Meng
Yang, Xi-Rui
Zhang, Qi
Zhang, Lei
Article History
Received: 23 November 2018
Accepted: 16 August 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: The informed consent was signed by all subjects. The protocol was approved by the Ethics Committee of Shengli Oilfield Central Hospital (No. Q/ZXYY-ZY-YWB-LL201515). Written informed consent was obtained from all patients enrolled in the investigation.
: Not applicable.
: The authors declare that they have no competing interests.