Funding for this research was provided by:
Shandong key research and development program (2016GSF201004)
Received: 3 April 2019
Accepted: 24 October 2019
First Online: 6 November 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Shandong Provincial Hospital affiliated to Shandong University. Written informed consent was obtained from each participant before surgery.
: All data published here are under the consent for publication. Written informed consent was obtained from all individual participants included in the study. The written consent mentioned here is for the publication of patient/clinical details.
: The authors declare that they have no competing interests.