Zeng, Zhangrui
Ding, Yinhuan
Tian, Gang
Yang, Kui
Deng, Jian
Li, Guangrong
Liu, Jinbo http://orcid.org/0000-0002-4446-4080
Funding for this research was provided by:
Sichuan Province Science and Technology Support Program (2018DJPT0011)
Health and Family Planning Commission of Sichuan Province (17PJ506)
the Affiliated Hospital of Luzhou Medical College Science Foundatio (14035)
Text and Data Mining valid from 2020-08-14
Version of Record valid from 2020-08-14
Article History
Received: 20 April 2020
Accepted: 5 August 2020
First Online: 14 August 2020
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of the Affiliated Hospital of Southwest Medical University (project no. KY2020043). This is a retrospective study. The need for informed consent was waived by the Clinical Research Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.