Wang, Xinyan
Liu, Ying
Chen, Qinghua
Xian, Junfang
Funding for this research was provided by:
High Level Health Technical Personnel of Bureau of Health in Beijing (2014-2-005)
Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support (ZYLX201704)
National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2015BAll6H00)
Key Talent Project”of Beijing (2014001)
“Set Sail Project”of Fujian Medical University (2017XQ1016)
Article History
Received: 2 January 2019
Accepted: 9 May 2019
First Online: 22 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.
: For this type of retrospective study formal consent is not required.