Gao, Chuan
Xu, Gang
Wang, Changyong
Wang, Dong
Article History
Received: 12 December 2018
Accepted: 17 February 2019
First Online: 28 February 2019
Ethics approval and consent to participate
: This study was approved by the ethic committee of our hospital and all signed informed consents were obtained.
: The patients included in the study provided their informed consent.
: The authors declare that they have no competing interests.
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