Funding for this research was provided by:
Science and Technology Planning Project of Shenzhen Municipality (SZSM2020)
Shenzhen Key Medical Discipline Construction Fund (No.SZXK027)
Shaanxi Health and Family Planning Commission (SZLY2017005)
China International Exchange and Promotion Association for medical and Healthcare (YCHFR2015-006)
Received: 11 June 2020
Accepted: 28 October 2020
First Online: 30 November 2020
Ethics approval and consent to participate
: All procedures in studies involving human participants were performed in accordance with ethical standards and approved by Both the Peking University Shenzhen Hospital (Shenzhen, China) and the Cleveland Clinic (Cleveland, Ohio) an Institutional Review Boards.
: The manuscript was approved for publication by all authors.
: The funders had no role in study design, in the collection, analysis and interpretation of data, and decision to publish, or preparation of the manuscript. All the authors declare no conflicts of interests.