Chen, Nan
Zhang, Jian-bo
Zhang, Qiujie
Zhao, Yun-peng
Li, Li-yan
Liu, Li-wei
Yu, Fei
Yu, Xin
Peng, Tao
Tang, Kuan-xiao
Funding for this research was provided by:
Special Research Found of Clinical Medicine of Chinese Medical Association (13060990484)
Natural Science Foundation of Shandong Province (ZR2015HM)
Joint Scientific Research Fund of Shandong University (11671315)
Article History
Received: 2 July 2017
Accepted: 30 April 2018
First Online: 16 May 2018
Ethics approval and consent to participate
: This study was approved by Qilu Hospital Shandong University. As this was a retrospective study with no direct patient identifiers revealed, individual consent was waived.
: The authors declare that the paper has not been submitted and/or is not currently under consideration elsewhere.
: The authors declare that they have no competing interests.
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