Funding for this research was provided by:
Chongqing Basic and Frontier Research Project (cstc2017jcyjA0475)
Text and Data Mining valid from 2019-12-01
Received: 11 September 2019
Accepted: 6 December 2019
First Online: 26 December 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Ethics Committee of the First Affiliated Hospital of Chongqing Medical University and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.
: The authors declare that they have no competing interests.