Sun, Yu-Qian
Wang, Yu
Zhang, Xiao-Hui
Xu, Lan-Ping
Liu, Kai-Yan
Yan, Chen-Hua
Liu, Zhao-Yu
Huang, Xiao-Jun
Article History
Received: 1 February 2019
Accepted: 6 May 2019
First Online: 29 May 2019
Compliance with ethical standards
: The Ethics Committee of the Peking University People’s Hospital approved this study. All procedures performed in these studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committees and with the 1964 Helsinki declaration and its later amendments, or with some comparable ethical standards. All patients gave written informed consent.
: The authors declare that they have no conflicts of interest.