Li, Kui http://orcid.org/0000-0002-5684-3918
Ran, Renyu
Jiang, Zicheng
Fan, Chuanqi
Li, Tao
Yin, Zhiguo http://orcid.org/0000-0002-7335-4817
Funding for this research was provided by:
Key Research and Development Program of Shaanxi (2020SF-113)
Article History
Received: 17 September 2019
Accepted: 21 May 2020
First Online: 29 May 2020
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: The present study was approved by the Ethics Committee of Ankang Central Hospital (ECACH-2016012). Because the study was a case-based retrospective study that did not put patients at risk, the requirement for informed consent was waived.