Xu, Junfang
Wang, Jian
King, Madeleine
Liu, Ruiyun
Yu, Fenghua
Xing, Jinshui
Su, Lei
Lu, Mingshan
Funding for this research was provided by:
Department of Health in Shandong (2013WS0152)
Article History
Received: 18 May 2016
Accepted: 17 March 2018
First Online: 27 March 2018
Compliance with ethical standards
:
: The authors declare no potential conflict of interest with respect to the research, authorship, and publication of this article.