Yang, Keyu
Zhou, Yong
Wang, Mofei
Shen, Mingyang
Zhang, Xiaowei
Wang, Yong https://orcid.org/0000-0002-7457-6200
Article History
First Online: 5 March 2019
Compliance with Ethical Standards
:
: I have not received payment or services from a third party for any aspect of the submitted work at any time. I have no financial relationships with others. I have no patents. Concerning conflicts of interest, the submitted work could not influence or potentially influence readers. There are no other relationships/conditions/circumstances that present a potential conflict of interest.
: This is a retrospective study. For this type of study, formal consent is not required.
: Informed consent was obtained from all individual participants included in the study.