Funding for this research was provided by:
Heilongjiang science and technology planning project (201716)
Harbin Science and Technology Bureau (2017RAXQJ067)
Article History
Received: 8 February 2019
Accepted: 1 May 2020
First Online: 23 May 2020
Compliance with ethical standards
:
: The authors report no conflicts of interest in this work.
: Ethical approval was provided by the Institutional Review Board of Harbin Medical University.
: Informed consent was obtained from all patients included in the study.