Zhu, Jing
Zhao, Zhiling
Nie, Qingrong
Wang, Yingnan
Fu, Zhen
Guo, Xiheng
Funding for this research was provided by:
the National Key Research and Development Program of China (2016YFC1304403)
Article History
Received: 11 August 2019
Revised: 18 September 2019
Accepted: 2 October 2019
First Online: 25 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The research protocol was approved by the Ethics Committee of each center and has been performed in accordance with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.