He, Shuying
Zhang, Xiuzhen http://orcid.org/0000-0003-3065-039X
Article History
Received: 22 August 2017
Accepted: 5 February 2018
First Online: 20 February 2018
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of China XD Group Hospital.
: N/A
: The authors declare that they have no competing interests.
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