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Authors
Niu, J
Xue, A
Chi, Y
Xue, J
Wang, W
Zhao, Z
Fan, M https://orcid.org/0000-0002-0185-5065
Yang, C H
Shao, Z-M
Pfeffer, L M
Wu, J
Wu, Z-H
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Article History
Received: 22 October 2014
Revised: 24 April 2015
Accepted: 24 April 2015
First Online: 1 June 2015
Competing interests
: The authors declare no conflict of interest.
