Li, Peng
Ding, Dun
Ma, Xue-ying
Zhang, Hua-wen
Liu, Ji-xin
Zhang, Ming
Funding for this research was provided by:
National Natural Science Foundation of China (81371530, 81471737)
Natural Science Foundation of Shaanxi Province of China (2017ZDJC-13)
Article History
First Online: 26 January 2018
Compliance with ethical standards
:
: Peng Li, Dun Ding, Xue-ying Ma, Hua-wen Zhang, Ji-xin Liu, and Ming Zhang declares 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 for being included in the study.