Zhang, Xu
Li, Xiao-Ying
Article History
Received: 17 November 2019
Accepted: 2 April 2020
First Online: 5 May 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All the procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee (Ethics committee of Medical School of Chinese PLA General Hospital) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: All study participants provided informed consent.