Jin, Youpeng
Liu, Jinlong
Wang, Wei
Wang, Yujuan
Yin, Yi
Xin, Xiaowei
Han, Bo
Funding for this research was provided by:
The Health Ministry of Shandong Province, P.R. China (2009QZ018)
Article History
Received: 7 June 2018
Accepted: 11 August 2018
First Online: 20 August 2018
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.