Sun, Ying
Yang, Chenghuai
Li, Junping
Li, Ling
Cao, Minghui
Li, Qihong
Li, Huijiao
Funding for this research was provided by:
Beijing Municipal Natural Science Foundation (6162025)
Article History
Received: 12 September 2016
Accepted: 19 September 2016
First Online: 5 October 2016
Compliance with ethical standards
:
: The authors declare no conflict of interest.