Pei, Shufang
Cong, Shuzhen
Zhang, Bin
Liang, Changhong
Zhang, Lu
Liu, Juanjuan
Guo, Yuping
Zhang, Shuixing
Article History
Received: 28 September 2018
Accepted: 9 January 2019
First Online: 1 March 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 Review Board and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Our Institutional Review Board waived the requirement to obtain informed consent from patients.