Teng, Dengke http://orcid.org/0000-0003-4266-8941
Ding, Lei
Wang, Yu
Liu, Caimei
Xia, Yongxu
Wang, Hui http://orcid.org/0000-0003-1480-5398
Article History
Received: 3 April 2018
Accepted: 6 August 2018
First Online: 13 August 2018
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.
: Informed consent was obtained from all individual participants included in the study.