Liang, Yuying
Jin, Xin
Yuan, Fang
Li, Zhanjia
Chen, Shuiping
Article History
Received: 16 October 2017
Accepted: 3 December 2018
First Online: 12 December 2018
Ethics approval and consent to participate
: Both ethical approval and consent to participate were waived by the ethical committee of the affiliated hospital of academy of military medical sciences.
: Not applicable.
: The authors declare that they have no competing interests.
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