Funding for this research was provided by:
Key Technology Research and Development Program of Shandong (2018GSF118163)
Shandong Provincial Medical Health Technology Development Project (2017WS009)
Received: 29 February 2020
Accepted: 22 June 2020
First Online: 29 June 2020
Ethics approval and consent to participate
: The Institutional Review Board of Shandong Provincial Hospital Affiliated with Shandong University approved this project (Approval Number: LCYJ: NO. 2019–004). All authors have signed written informed consent and approved the submission of this version of the manuscript and take full responsibility for the manuscript. The legal guardian of all participants signed an informed consent form that their data could be used for various clinical studies.
: Not Applicable.
: No financial or nonfinancial benefits have been received or will be received from any party related directly or indirectly to the subject of this article.