Jin, Jianjun
Si, Jiming
Liu, Yuanhua
Wang, Huanqin
Ni, Ran
Wang, Jing
Article History
Received: 23 April 2018
Accepted: 10 September 2018
First Online: 5 October 2018
Ethics approval and consent to participate
: A written informed consent was obtained from all the patients and controls. This study was approved by the Ethics Committee of the First Affiliated Hospital of Zhengzhou University.
: Not applicable.
: The authors declared that they had no competing interests.
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