Zhu, Yueniu
Zhu, Xiaodong
Deng, Mengyan
Wei, Hongxia
Zhang, Mingjun
Article History
Received: 17 September 2016
Accepted: 29 December 2017
First Online: 18 January 2018
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committees of the studied hospital, and the need for written informed consent was waived by the committee as all data were used retrospectively and de-identified. The consent to participate is not applicable.
: Not applicable.
: The authors declare that they have no competing interests.
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