Zhou, Lingling
Zhao, Ping
Wu, Dongdong
Cheng, Cheng
Huang, Hao https://orcid.org/0000-0003-1315-7077
Article History
Received: 26 July 2017
Accepted: 23 May 2018
First Online: 15 June 2018
Ethics approval and consent to participate
: This study was approved by the Daping Hospital of Army Military Medical University. Informed consent was waived because this research did not involve individual data.
: The authors declare that they have no competing interests.
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