Wang, Genan
Li, Yaxiong
Peng, Yong
Tang, Jian
Li, Hua
Article History
Received: 9 February 2018
Accepted: 28 March 2018
First Online: 10 April 2018
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of the Yan’An Hospital Affiliated to Kunming Medical University. All patients agreed to participate in the study and signed the informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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