Xie, Peng
Zhang, Qi-hao
Zheng, Gui-zhou
Liu, De-zhong
Miao, Hou-guang
Zhang, Wei-fang
Ye, Jian-feng
Du, Shi-xin
Li, Xue-dong
Article History
First Online: 8 January 2019
Compliance with ethical guidelines
:
: P. Xie, Q.-h. Zhang, G.-z. Zheng, D.-z. Liu, H.-g. Miao, W.-f. Zhang, J.-f. Ye, S.-x. Du and X.-d. Li declare that they have no competing interests.
: 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 1975 Helsinki declaration and its later amendments or comparable ethical standards. All subjects provided written informed consent in accordance with institutional policies.