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Authors
Ni, Lianghong
Zhao, Zhili
Xu, Hongxi
Chen, Shilin
Dorje, Gaawe
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Funding
Funding for this research was provided by:
The National Natural Science Foundation of China (81173654)
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Article History
Received: 4 February 2016
Revised: 7 July 2016
Accepted: 8 July 2016
First Online: 15 July 2016
Compliance with ethical standards
:
: There is no conflict of interest.
Free to read: This content has been made available to all.
