Funding for this research was provided by:
the Science and Technology Project of the Health department of Sichuan (120326)
Collaborative Fund of Luzhou Government and Southwest Medical University (2018LZXNYD-ZK29)
Collaborative Fund of Luzhou Government and Sichuan Medical University (2015SX-W35)
the Youth Fund of Southwest Medical University (2017-ZRQN-103)
the Science and Technology Project of the Health Planning Committee of Sichuan (18PJ340)
Research Fund of the Affiliated Hospital of Southwest Medical University (16237)
Received: 8 August 2019
Accepted: 28 August 2020
First Online: 16 September 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Ethics Committee of Affiliated Hospital of Southwest Medical University and performed in adherence with the principles of the Declaration of Helsinki. Written informed consent was obtained from the patients and at the case of the patient was unable to write or the patient was unconscious, it was obtained from their family members.
: Not applicable.
: The authors declared no conflicts of interest.