Sun, Xiao-Wei
Wei, Juan
Yang, Zhao
Jin, Xin-Xin
Wan, Hai-Jun
Yuan, Bo-Si
Yang, Miao-Fang
Liu, Jiong
Wang, Fang-Yu
Article History
Received: 21 December 2018
Accepted: 29 April 2019
First Online: 11 May 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 Declaration of Helsinki and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.