Funding for this research was provided by:
Jinan Science and Technology Development Program (201907018)
Shandong Provincial Key Research and Development Program (2017G006037)
Received: 3 April 2020
Accepted: 4 June 2020
First Online: 12 June 2020
Ethics approval and consent to participate
: The research was approved by the Research Ethics Committee of Jinan Central Hospital. All the patients signed written informed consent.
: The publication of this work is approved by all authors involved.
: The authors declare that they have no competing interests.