Li, Honghong
Li, Liting
Huang, Xiaolong
Li, Yi
Zou, Tangjie
Zhuo, Xiaohuang
Chen, Yan
Liu, Yimin
Tang, Yamei
Article History
Received: 19 May 2018
Accepted: 22 December 2018
First Online: 28 January 2019
Compliance with ethical guidelines
:
: H. Li, L. Li, X. Huang, Y. Li, T. Zou, X. Zhuo, Y. Chen, Y. Liu and Y. Tang 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 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.