Han, Yingying
Song, Xinyuan
Liu, Ying
Zhang, Wenyu
Li, Jinping
Tu, Yangke
Chang, Wenxiu http://orcid.org/0000-0001-6269-5694
Funding for this research was provided by:
Tianjin Municipal Health Bureau (A0102)
Article History
Received: 28 August 2019
Accepted: 17 February 2020
First Online: 2 March 2020
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 (Tianjin First Center Hospital, 2015008S) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Written informed consent was obtained from each patient before the study began.