Ge, Siqi
Xu, Xizhu
Zhang, Jie
Hou, Haifeng
Wang, Hao
Liu, Di
Zhang, Xiaoyu
Song, Manshu
Li, Dong
Zhou, Yong
Wang, Youxin http://orcid.org/0000-0002-6574-6706
Wang, Wei
Funding for this research was provided by:
National Natural Science Foundation of China (81673247, 81773527, 81872682)
Article History
Received: 3 September 2018
Accepted: 11 January 2019
First Online: 24 January 2019
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: Not applicable.
: The study was conducted according to the guidelines of Helsinki Declaration. Approvals have been obtained from Ethical Committees of the Staff Hospital of <i>Jidong</i> Oil-field of Chinese National Petroleum, and Capital Medical University. Written informed consent has also been obtained from each of the participants.