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Authors
Liu, Feng
Sun, Fei
Xia, Jun Hong
Li, Jian
Fu, Gui Hong
Lin, Grace
Tu, Rong Jian
Wan, Zi Yi
Quek, Delia
Yue, Gen Hua
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Article History
Received: 2 June 2014
Accepted: 4 November 2014
First Online: 1 December 2014
Competing interests
: The authors declare no competing financial interests.
