Zhai, Yida http://orcid.org/0000-0002-6903-4319
Funding for this research was provided by:
National Natural Science Foundation of China (no. 71874109)
Article History
First Online: 23 January 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 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.