Lin, Junhao
Wang, Zhifeng
Zhang, Hong
Pei, Yantao
Zhu, Lei
Xu, Qingjia http://orcid.org/0000-0003-0846-2886
Article History
Received: 14 December 2021
Accepted: 28 May 2022
First Online: 7 June 2022
Declarations
:
: This research study was conducted retrospectively from data obtained for clinical purposes. We consulted extensively with the IRB of Qilu Hospital of Shandong University who determined that our study did not need ethical approval. An IRB official waiver of ethical approval was granted from the IRB of Qilu Hospital of Shandong University.
: The authors declare no competing interests.