Pei, Xinjian
Han, Jiuhui
Article History
Received: 1 December 2018
Accepted: 12 March 2019
First Online: 20 March 2019
Ethics approval and consent to participate
: This study was approved by the institutional review board of the Third Hospital of Hebei Medical University. All patients gave written informed consent before participating in this study.
: All patients and their families gave their written informed consent for the publication of their individual data and identifying photographs.
: The authors declare that they have no competing interests.
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