Funding for this research was provided by:
the Excellent Medical and Health Talents Training Project of Qingdao City
Received: 23 February 2023
Accepted: 4 July 2023
First Online: 11 August 2023
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Ethical approval to report these cases were obtained from the Qingdao Municipal Hospital, Approval Case No. 2015-22.
: All participants consented for publication of the results of the study.
: All authors declare that they have no competing interests.